diff --git a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorContent.kt b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorContent.kt
index f91856fb12..8e78b9654c 100644
--- a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorContent.kt
+++ b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorContent.kt
@@ -52,6 +52,7 @@ internal fun EditorContent(
     typeContent: @Composable () -> Unit,
     modifier: Modifier = Modifier,
     isPrefillLoading: Boolean = false,
+    isTypeSelectionEnabled: Boolean = true,
 ) {
     Column(
         modifier =
@@ -71,6 +72,7 @@ internal fun EditorContent(
             onValueSelected = state::onTypeSelected,
             expanded = state.typeDropdownExpanded,
             onExpandedChange = state::onTypeDropdownExpandedChange,
+            enabled = isTypeSelectionEnabled,
             menuStyle =
                 DropdownMenuStyle(
                     shadowElevation = 10.dp,
@@ -124,6 +126,7 @@ fun AfternoteEditorBody(
     snackbarHostState: SnackbarHostState,
     modifier: Modifier = Modifier,
     isPrefillLoading: Boolean = false,
+    isTypeSelectionEnabled: Boolean = true,
 ) {
     // 슬롯을 누르면 곧장 갤러리가 뜨는 대신 "갤러리에서 선택 / 촬영" 시트를 한 단계 끼운다 (#369).
     val mediaSourceState =
@@ -151,6 +154,7 @@ fun AfternoteEditorBody(
         },
         modifier = modifier,
         isPrefillLoading = isPrefillLoading,
+        isTypeSelectionEnabled = isTypeSelectionEnabled,
     )
 
     MemorialMediaSourceSheet(state = mediaSourceState)
diff --git a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorScreen.kt b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorScreen.kt
index edd12825ae..f88c6617ce 100644
--- a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorScreen.kt
+++ b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorScreen.kt
@@ -55,6 +55,10 @@ fun AfternoteEditorScreen(
     onRegisterClick: () -> Unit,
     snackbarMessage: String?,
     onSnackbarMessageConsumed: () -> Unit,
+    // 스낵바 쌍과 같은 이유로 기본값을 주지 않는다: 새 진입 경로가 검증 팝업 배선을 빠뜨리면
+    // 조용히 팝업 없는 에디터가 되는 대신 컴파일 단계에서 걸리게 한다.
+    validationMessage: String?,
+    onValidationMessageConsumed: () -> Unit,
     content: @Composable (SnackbarHostState) -> Unit,
     modifier: Modifier = Modifier,
     state: AfternoteEditorState = rememberAfternoteEditorState(),
@@ -164,6 +168,15 @@ fun AfternoteEditorScreen(
                     dismissText = stringResource(R.string.afternote_editor_exit_confirm_cancel),
                 )
             }
+
+            if (validationMessage != null) {
+                Popup(
+                    type = PopupType.Default,
+                    message = validationMessage,
+                    onConfirm = onValidationMessageConsumed,
+                    onDismiss = onValidationMessageConsumed,
+                )
+            }
         }
     }
 }
diff --git a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorValidator.kt b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorValidator.kt
index 75a1c432d1..05bfa1f5f9 100644
--- a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorValidator.kt
+++ b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorValidator.kt
@@ -8,55 +8,49 @@ import com.afternote.feature.afternote.presentation.author.editor.state.EditorFo
 /**
  * 애프터노트 저장 전 필수 필드 검증.
  *
- * 카테고리별 필수 입력 조건을 검사하여 첫 번째 오류를 반환합니다.
+ * 카테고리별 필수 입력 조건을 모두 검사한다. 누락이 하나면 해당 필드 오류를, 둘 이상이면
+ * [AfternoteValidationError.MULTIPLE_REQUIRED_FIELDS]를 반환한다.
  */
 internal object AfternoteEditorValidator {
     fun validate(
         form: EditorFormState,
         payload: RegisterAfternotePayload,
-        selectedReceiverIds: List<Long>,
     ): AfternoteValidationError? {
         val type = form.selectedType
-        // 미구현 placeholder 카테고리는 입력 상태와 무관하게 저장 불가 — 개별 필드 검증(수신자·서비스명)보다 먼저 차단해
+        // 미구현 placeholder 카테고리는 입력 상태와 무관하게 저장 불가 — 개별 필드 검증(서비스명 등)보다 먼저 차단해
         // "서비스명을 선택하라" 류의 그릴 수도 없는 필드에 대한 안내가 나가지 않게 한다.
         if (type == AfternoteType.ESTATE) {
             return AfternoteValidationError.UNIMPLEMENTED_TYPE
         }
-        if (selectedReceiverIds.isEmpty()) {
-            return AfternoteValidationError.RECEIVERS_REQUIRED
-        }
-        if (payload.serviceName.trim().isEmpty()) {
-            return AfternoteValidationError.TITLE_REQUIRED
-        }
+        val errors = mutableListOf<AfternoteValidationError>()
+        if (payload.serviceName.trim().isEmpty()) errors += AfternoteValidationError.TITLE_REQUIRED
         // 아무것도 안 쓴 빈 칸은 저장 시 버려지지만, 제목만 채운 블록은 서버가 400 으로 거절한다.
         if (payload.messageBlocks.any { it.title.isNotBlank() && it.body.isBlank() }) {
-            return AfternoteValidationError.LEAVE_MESSAGE_BODY_REQUIRED
+            errors += AfternoteValidationError.LEAVE_MESSAGE_BODY_REQUIRED
         }
-        return when (type) {
-            // BUSINESS 는 시안(700:38735)의 필수 항목(계정 정보·처리 방법)이 SOCIAL 과 동일해 같은 규칙을 쓴다.
-            AfternoteType.SOCIAL_NETWORK, AfternoteType.BUSINESS -> validateAccount(payload)
+        when (type) {
+            // 필수 판정 기준은 서버 계약(정식 등록 타이트 검증)이다 — 계정형은 계정 정보만 서버가 요구하고,
+            // 처리 방법(actions)·수신자는 서버도 「생략 또는 빈 배열 가능」인 선택 항목이다.
+            AfternoteType.SOCIAL_NETWORK, AfternoteType.BUSINESS -> {
+                if (payload.accountId.isBlank() || payload.password.isBlank()) {
+                    errors += AfternoteValidationError.ACCOUNT_CREDENTIALS_REQUIRED
+                }
+            }
 
-            AfternoteType.GALLERY_AND_FILES -> validateProcessingMethods(payload)
+            AfternoteType.GALLERY_AND_FILES -> {}
 
-            AfternoteType.MEMORIAL -> null
+            // 서버는 정식 등록 시 추모 플레이리스트 곡을 필수로 검증한다(PLAYLIST_SONGS_REQUIRED) —
+            // 확정 안내 문구가 없어 FE 검증 신설은 #1389 에서 다룬다.
+            AfternoteType.MEMORIAL -> {}
 
             // ESTATE 는 디자인 확정 전 placeholder 만 노출. UI 자체에서 입력이 막혀 있지만
             // 안전망으로 Validator 에서도 저장을 차단한다.
-            AfternoteType.ESTATE -> AfternoteValidationError.UNIMPLEMENTED_TYPE
+            AfternoteType.ESTATE -> {}
         }
-    }
-
-    private fun validateAccount(payload: RegisterAfternotePayload): AfternoteValidationError? {
-        if (payload.accountId.isBlank() || payload.password.isBlank()) {
-            return AfternoteValidationError.ACCOUNT_CREDENTIALS_REQUIRED
-        }
-        return validateProcessingMethods(payload)
-    }
-
-    private fun validateProcessingMethods(payload: RegisterAfternotePayload): AfternoteValidationError? {
-        if (payload.processingMethods.isEmpty()) {
-            return AfternoteValidationError.PROCESSING_METHODS_REQUIRED
+        return when (errors.size) {
+            0 -> null
+            1 -> errors.single()
+            else -> AfternoteValidationError.MULTIPLE_REQUIRED_FIELDS
         }
-        return null
     }
 }
diff --git a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorViewModel.kt b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorViewModel.kt
index 81d2d0d12b..c2972d37ba 100644
--- a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorViewModel.kt
+++ b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorViewModel.kt
@@ -387,7 +387,6 @@ class AfternoteEditorViewModel
                 AfternoteEditorValidator.validate(
                     form = form,
                     payload = payload,
-                    selectedReceiverIds = selectedReceiverIds,
                 )
             if (validationError != null) {
                 internalState.update {
diff --git a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/processing/ProcessingMethodListSection.kt b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/processing/ProcessingMethodListSection.kt
index 591362bc02..cafe3853e4 100644
--- a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/processing/ProcessingMethodListSection.kt
+++ b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/processing/ProcessingMethodListSection.kt
@@ -28,7 +28,7 @@ fun ProcessingMethodListSection(
     ) {
         EditorSectionLabel(
             text = stringResource(R.string.afternote_editor_label_process_method_list),
-            isRequired = true,
+            isRequired = false,
         )
         ProcessingMethodList(
             items = section.items,
diff --git a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/receiver/RecipientDesignationSection.kt b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/receiver/RecipientDesignationSection.kt
index 7d00c74af0..c1bae5acb0 100644
--- a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/receiver/RecipientDesignationSection.kt
+++ b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/receiver/RecipientDesignationSection.kt
@@ -29,7 +29,7 @@ fun RecipientDesignationSection(
     ) {
         EditorSectionLabel(
             text = stringResource(R.string.afternote_editor_label_receiver_add),
-            isRequired = true,
+            isRequired = false,
         )
         AfternoteEditorReceiverList(
             afternoteEditReceivers = section.afternoteEditReceivers,
diff --git a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/selection/EditorSelectionDropdown.kt b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/selection/EditorSelectionDropdown.kt
index bc0a6fd3b6..3a59e1591d 100644
--- a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/selection/EditorSelectionDropdown.kt
+++ b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/selection/EditorSelectionDropdown.kt
@@ -63,6 +63,7 @@ data class DropdownMenuStyle(
  * @param onExpandedChange Callback invoked when the user requests to open/close the menu
  * @param modifier Modifier for the component
  * @param isRequired 라벨에 필수 표시(*) 노출 여부
+ * @param enabled false이면 선택 앵커와 메뉴를 비활성화하고 드롭다운 셰브론을 숨긴다
  * @param placeholder [optionLabel]로 변환한 [selectedValue]가 비어 있을 때 앵커에 흐리게(gray5) 노출할 미선택 안내 문구
  * @param menuStyle Style configuration for the dropdown menu
  */
@@ -78,6 +79,7 @@ fun <T> EditorSelectionDropdown(
     onExpandedChange: (Boolean) -> Unit,
     modifier: Modifier = Modifier,
     isRequired: Boolean = false,
+    enabled: Boolean = true,
     placeholder: String? = null,
     menuStyle: DropdownMenuStyle = DropdownMenuStyle(),
 ) {
@@ -98,15 +100,17 @@ fun <T> EditorSelectionDropdown(
 
         // Material 3 ExposedDropdownMenuBox: 앵커–메뉴 너비·접근성, 서브컴포지션 없이 처리
         ExposedDropdownMenuBox(
-            expanded = expanded,
-            onExpandedChange = onExpandedChange,
+            expanded = expanded && enabled,
+            onExpandedChange = { if (enabled) onExpandedChange(it) },
             modifier = Modifier.fillMaxWidth(),
         ) {
             Row(
                 modifier =
                     Modifier
-                        .menuAnchor(type = ExposedDropdownMenuAnchorType.PrimaryNotEditable)
-                        .fillMaxWidth()
+                        .menuAnchor(
+                            type = ExposedDropdownMenuAnchorType.PrimaryNotEditable,
+                            enabled = enabled,
+                        ).fillMaxWidth()
                         .bottomBorder(color = AfternoteDesign.colors.gray3, width = 0.58.dp)
                         .padding(top = 4.dp, bottom = 8.dp),
                 verticalAlignment = Alignment.CenterVertically,
@@ -123,15 +127,17 @@ fun <T> EditorSelectionDropdown(
                         ),
                 )
 
-                Icon(
-                    painter = painterResource(R.drawable.feature_afternote_ic_dropdown_vector),
-                    contentDescription = stringResource(R.string.afternote_editor_content_description_dropdown),
-                    tint = AfternoteDesign.colors.gray8,
-                )
+                if (enabled) {
+                    Icon(
+                        painter = painterResource(R.drawable.feature_afternote_ic_dropdown_vector),
+                        contentDescription = stringResource(R.string.afternote_editor_content_description_dropdown),
+                        tint = AfternoteDesign.colors.gray8,
+                    )
+                }
             }
 
             ExposedDropdownMenu(
-                expanded = expanded,
+                expanded = expanded && enabled,
                 onDismissRequest = { onExpandedChange(false) },
                 modifier = Modifier.offset(y = menuStyle.menuOffset),
                 shape = menuStyle.shape,
diff --git a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/state/AfternoteSaveState.kt b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/state/AfternoteSaveState.kt
index 35a2d885ca..0bc445a3a9 100644
--- a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/state/AfternoteSaveState.kt
+++ b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/state/AfternoteSaveState.kt
@@ -12,8 +12,8 @@ enum class AfternoteValidationError(
     TITLE_REQUIRED(R.string.afternote_validation_title_required),
     ACCOUNT_CREDENTIALS_REQUIRED(R.string.afternote_validation_account_credentials_required),
 
-    /** 처리 방법 1개 이상 필요 (계정·갤러리 폼 공통). */
-    PROCESSING_METHODS_REQUIRED(R.string.afternote_validation_processing_methods_required),
+    /** 둘 이상의 필수 입력이 동시에 비어 있어 특정 필드 하나로 안내를 좁힐 수 없음. */
+    MULTIPLE_REQUIRED_FIELDS(R.string.afternote_validation_multiple_required_fields),
 
     /** ESTATE 등 디자인 미확정으로 placeholder 만 노출되는 카테고리에서 저장 시도 시. */
     UNIMPLEMENTED_TYPE(R.string.afternote_validation_unimplemented_category),
@@ -32,7 +32,7 @@ enum class AfternoteValidationError(
  * 에디터에서 UI가 소비할 단일 오류 상태.
  *
  * nullable [AfternoteEditorUiState.error]의 `null`은 오류가 없는 정상 상태이고, 값이 있을 때만
- * 오류 종류에 맞는 안내를 노출한다. 화면 표현은 디자인 확정 전까지 기존 Snackbar를 유지한다.
+ * 오류 종류에 맞는 안내를 노출한다. 검증 오류는 확인 팝업, 네트워크·서버·업로드 오류는 Snackbar로 표시한다.
  */
 sealed interface AfternoteEditorError {
     data class Validation(
diff --git a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/navigation/AfternoteNavGraphEditor.kt b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/navigation/AfternoteNavGraphEditor.kt
index 24d176c749..1c7bd57389 100644
--- a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/navigation/AfternoteNavGraphEditor.kt
+++ b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/navigation/AfternoteNavGraphEditor.kt
@@ -175,7 +175,25 @@ internal fun AfternoteEditorNavigation(
     }
 
     val errorEvent = uiState.errorEvent
-    val snackbarMessage = errorEvent?.error?.let { stringResource(it.messageResId()) }
+    // 오류 하나는 정확히 한 채널로만 간다 — 검증 실패는 확인 팝업, 그 외 전부는 스낵바.
+    val validationMessage: String?
+    val snackbarMessage: String?
+    when (val error = errorEvent?.error) {
+        null -> {
+            validationMessage = null
+            snackbarMessage = null
+        }
+
+        is AfternoteEditorError.Validation -> {
+            validationMessage = stringResource(error.messageResId())
+            snackbarMessage = null
+        }
+
+        else -> {
+            validationMessage = null
+            snackbarMessage = stringResource(error.messageResId())
+        }
+    }
 
     val onRegisterClick =
         remember(editViewModel, state) {
@@ -192,6 +210,10 @@ internal fun AfternoteEditorNavigation(
         onSnackbarMessageConsumed = {
             errorEvent?.let(editViewModel::onErrorConsumed)
         },
+        validationMessage = validationMessage,
+        onValidationMessageConsumed = {
+            errorEvent?.let(editViewModel::onErrorConsumed)
+        },
         content = { snackbarHostState ->
             AfternoteEditorBody(
                 state = state,
@@ -203,6 +225,7 @@ internal fun AfternoteEditorNavigation(
                 onCaptureFailed = editViewModel::onMemorialCaptureLaunchFailed,
                 snackbarHostState = snackbarHostState,
                 isPrefillLoading = uiState.isPrefillLoading,
+                isTypeSelectionEnabled = !editViewModel.isEditing,
             )
         },
         state = state,
diff --git a/feature/afternote/presentation/src/main/res/values/strings.xml b/feature/afternote/presentation/src/main/res/values/strings.xml
index 01e3981720..4061746dc4 100644
--- a/feature/afternote/presentation/src/main/res/values/strings.xml
+++ b/feature/afternote/presentation/src/main/res/values/strings.xml
@@ -246,10 +246,10 @@
     <string name="afternote_detail_deleting">삭제 중</string>
     <string name="afternote_edit_item_not_found">항목을 찾을 수 없습니다.</string>
 
-    <string name="afternote_validation_title_required">등록할 서비스(플랫폼)명을 선택해 주세요.</string>
+    <string name="afternote_validation_title_required">서비스명: 애프터노트를 등록하려면 서비스를 먼저 선택해 주세요.</string>
     <string name="afternote_edit_service_label">등록할 서비스</string>
-    <string name="afternote_validation_account_credentials_required">계정 ID와 비밀번호를 입력해 주세요.</string>
-    <string name="afternote_validation_processing_methods_required">처리 방법을 한 가지 이상 추가해 주세요.</string>
+    <string name="afternote_validation_account_credentials_required">계정정보: 계정 정보가 입력되지 않으면 저장할 수 없습니다.</string>
+    <string name="afternote_validation_multiple_required_fields">입력하지 않은 항목이 있습니다. 확인 후 다시 시도해 주세요.</string>
     <string name="afternote_validation_receivers_required">수신자를 한 명 이상 선택해 주세요.</string>
     <string name="afternote_validation_leave_message_body_required">남기실 말씀의 내용을 입력해 주세요.</string>
     <string name="afternote_default_playlist_song_title">추억 플레이리스트 곡</string>
diff --git a/feature/afternote/presentation/src/screenshotTest/kotlin/com/afternote/feature/afternote/presentation/author/editor/selection/SelectionDropdownScreenshotTest.kt b/feature/afternote/presentation/src/screenshotTest/kotlin/com/afternote/feature/afternote/presentation/author/editor/selection/SelectionDropdownScreenshotTest.kt
index 2481e65eb4..9cfa1c8dcf 100644
--- a/feature/afternote/presentation/src/screenshotTest/kotlin/com/afternote/feature/afternote/presentation/author/editor/selection/SelectionDropdownScreenshotTest.kt
+++ b/feature/afternote/presentation/src/screenshotTest/kotlin/com/afternote/feature/afternote/presentation/author/editor/selection/SelectionDropdownScreenshotTest.kt
@@ -60,3 +60,24 @@ internal fun selectionDropdownSelectedScreenshot() {
         }
     }
 }
+
+// 수정 모드의 종류 필드 — 값과 하단선은 유지하되 드롭다운 셰브론과 선택 동작은 제거한다 (#951).
+@PreviewTest
+@Preview(showBackground = true)
+@Composable
+internal fun selectionDropdownDisabledScreenshot() {
+    AfternoteTheme {
+        Box(modifier = Modifier.padding(24.dp)) {
+            EditorSelectionDropdown(
+                label = stringResource(R.string.afternote_editor_label_category),
+                selectedValue = stringResource(R.string.afternote_editor_category_social),
+                options = emptyList(),
+                optionLabel = { it },
+                onValueSelected = {},
+                expanded = false,
+                onExpandedChange = {},
+                enabled = false,
+            )
+        }
+    }
+}
diff --git a/feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/author/editor/account/AccountEditorContentScreenshotTestKt/accountEditorContentWithRecipientScreenshot_748aa731_0.png b/feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/author/editor/account/AccountEditorContentScreenshotTestKt/accountEditorContentWithRecipientScreenshot_748aa731_0.png
index 30aafcb330..5dc0bfda4c 100644
Binary files a/feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/author/editor/account/AccountEditorContentScreenshotTestKt/accountEditorContentWithRecipientScreenshot_748aa731_0.png and b/feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/author/editor/account/AccountEditorContentScreenshotTestKt/accountEditorContentWithRecipientScreenshot_748aa731_0.png differ
diff --git a/feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/author/editor/account/AccountEditorContentScreenshotTestKt/accountEditorContentWithoutRecipientScreenshot_748aa731_0.png b/feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/author/editor/account/AccountEditorContentScreenshotTestKt/accountEditorContentWithoutRecipientScreenshot_748aa731_0.png
index a348d76947..bab4dfdfae 100644
Binary files a/feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/author/editor/account/AccountEditorContentScreenshotTestKt/accountEditorContentWithoutRecipientScreenshot_748aa731_0.png and b/feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/author/editor/account/AccountEditorContentScreenshotTestKt/accountEditorContentWithoutRecipientScreenshot_748aa731_0.png differ
diff --git a/feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/author/editor/gallery/GalleryAndFileEditorContentScreenshotTestKt/galleryAndFileEditorContentScreenshot_748aa731_0.png b/feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/author/editor/gallery/GalleryAndFileEditorContentScreenshotTestKt/galleryAndFileEditorContentScreenshot_748aa731_0.png
index 9153ef3949..321b0e0ca0 100644
Binary files a/feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/author/editor/gallery/GalleryAndFileEditorContentScreenshotTestKt/galleryAndFileEditorContentScreenshot_748aa731_0.png and b/feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/author/editor/gallery/GalleryAndFileEditorContentScreenshotTestKt/galleryAndFileEditorContentScreenshot_748aa731_0.png differ
diff --git a/feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/author/editor/memorial/MemorialEditorContentScreenshotTestKt/memorialEditorContentScreenshot_748aa731_0.png b/feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/author/editor/memorial/MemorialEditorContentScreenshotTestKt/memorialEditorContentScreenshot_748aa731_0.png
index 8c169b97a4..5bf6c1d84c 100644
Binary files a/feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/author/editor/memorial/MemorialEditorContentScreenshotTestKt/memorialEditorContentScreenshot_748aa731_0.png and b/feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/author/editor/memorial/MemorialEditorContentScreenshotTestKt/memorialEditorContentScreenshot_748aa731_0.png differ
diff --git a/feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/author/editor/selection/SelectionDropdownScreenshotTestKt/selectionDropdownDisabledScreenshot_748aa731_0.png b/feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/author/editor/selection/SelectionDropdownScreenshotTestKt/selectionDropdownDisabledScreenshot_748aa731_0.png
new file mode 100644
index 0000000000..2a9ae63d33
Binary files /dev/null and b/feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/author/editor/selection/SelectionDropdownScreenshotTestKt/selectionDropdownDisabledScreenshot_748aa731_0.png differ
diff --git a/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/AfternoteAuthorExtendedTest.kt b/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/AfternoteAuthorExtendedTest.kt
index 0eac6c389b..d543511beb 100644
--- a/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/AfternoteAuthorExtendedTest.kt
+++ b/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/AfternoteAuthorExtendedTest.kt
@@ -152,20 +152,29 @@ class AfternoteAuthorExtendedTest {
     }
 
     @Test
-    fun repeatedValidation_afterSnackbarDismiss_showsAgainWithoutSaveCall() {
+    fun repeatedValidation_afterPopupConfirm_showsAgainWithoutSaveCall() {
         val repository =
             FakeAfternoteRepository.strict().apply {
                 onGetDetail = {
-                    Result.success(authorDetail().copy(receivers = emptyList()))
+                    // 수신자는 선택 항목(#951)이라 비어 있어도 오류에 끼지 않는다 — 계정정보 누락만 단일 오류로 떠야 한다.
+                    Result.success(
+                        authorDetail().copy(
+                            receivers = emptyList(),
+                            content =
+                                DetailContent.SocialNetwork(
+                                    credentials = DetailCredentials(id = "", password = ""),
+                                    processingMethods = listOf("계정 삭제"),
+                                ),
+                        ),
+                    )
                 }
             }
         val viewModel = editorViewModel(repository, itemId = 73L)
         var editorState: AfternoteEditorState? = null
-        var snackbarHostState: SnackbarHostState? = null
         val validationMessage =
             RuntimeEnvironment
                 .getApplication()
-                .getString(R.string.afternote_validation_receivers_required)
+                .getString(R.string.afternote_validation_account_credentials_required)
 
         composeRule.setContent {
             AfternoteTheme {
@@ -173,15 +182,13 @@ class AfternoteAuthorExtendedTest {
                     itemId = 73L,
                     viewModel = viewModel,
                     onStateReady = { editorState = it },
-                    onSnackbarHostReady = { snackbarHostState = it },
                 )
             }
         }
 
         composeRule.waitUntil(timeoutMillis = 5_000) {
             !viewModel.uiState.value.isPrefillLoading &&
-                editorState != null &&
-                snackbarHostState != null
+                editorState != null
         }
         composeRule.onNodeWithText("Instagram").assertIsDisplayed()
         val topBarRegister =
@@ -194,11 +201,9 @@ class AfternoteAuthorExtendedTest {
         val firstOccurrence = requireNotNull(viewModel.uiState.value.errorEvent).occurrence
         assertEquals(0, repository.updateCalls.size)
 
-        composeRule.runOnIdle {
-            requireNotNull(snackbarHostState).currentSnackbarData?.dismiss()
-        }
+        composeRule.onNodeWithText("확인").performClick()
         composeRule.waitUntil(timeoutMillis = 5_000) {
-            snackbarHostState?.currentSnackbarData == null && viewModel.uiState.value.errorEvent == null
+            viewModel.uiState.value.errorEvent == null
         }
         composeRule.onNodeWithText(validationMessage).assertDoesNotExist()
 
@@ -294,7 +299,6 @@ private fun AuthorEditorForUpdate(
     itemId: Long,
     viewModel: AfternoteEditorViewModel,
     onStateReady: (AfternoteEditorState) -> Unit,
-    onSnackbarHostReady: (SnackbarHostState) -> Unit = {},
 ) {
     val uiState by viewModel.uiState.collectAsStateWithLifecycle()
     val state =
@@ -344,15 +348,18 @@ private fun AuthorEditorForUpdate(
                 memorialMedia = SaveAfternoteMemorialMedia(),
             )
         },
-        snackbarMessage =
+        snackbarMessage = null,
+        validationMessage =
             (errorEvent?.error as? AfternoteEditorError.Validation)?.let {
                 stringResource(it.reason.messageResId)
             },
         onSnackbarMessageConsumed = {
             errorEvent?.let(viewModel::onErrorConsumed)
         },
+        onValidationMessageConsumed = {
+            errorEvent?.let(viewModel::onErrorConsumed)
+        },
         content = { editorSnackbarHostState ->
-            onSnackbarHostReady(editorSnackbarHostState)
             AfternoteEditorBody(
                 state = state,
                 form = uiState.form,
diff --git a/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/AfternoteAuthorTest.kt b/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/AfternoteAuthorTest.kt
index 93e8dd26c2..4746a1e1d1 100644
--- a/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/AfternoteAuthorTest.kt
+++ b/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/AfternoteAuthorTest.kt
@@ -2,10 +2,7 @@ package com.afternote.feature.afternote.presentation.author
 
 import androidx.compose.material3.Text
 import androidx.compose.runtime.getValue
-import androidx.compose.ui.res.stringResource
-import androidx.compose.ui.test.assertIsDisplayed
 import androidx.compose.ui.test.junit4.v2.createComposeRule
-import androidx.compose.ui.test.onNodeWithText
 import androidx.lifecycle.SavedStateHandle
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import com.afternote.core.ui.theme.AfternoteTheme
@@ -20,8 +17,6 @@ import com.afternote.feature.afternote.presentation.author.editor.AfternoteEdito
 import com.afternote.feature.afternote.presentation.author.editor.SaveAfternoteMemorialMedia
 import com.afternote.feature.afternote.presentation.author.editor.message.EditorMessageTextBlock
 import com.afternote.feature.afternote.presentation.author.editor.model.RegisterAfternotePayload
-import com.afternote.feature.afternote.presentation.author.editor.state.AfternoteEditorError
-import com.afternote.feature.afternote.presentation.author.editor.state.AfternoteValidationError
 import org.junit.Assert.assertEquals
 import org.junit.Assert.assertNull
 import org.junit.Rule
@@ -39,16 +34,16 @@ class AfternoteAuthorTest {
     val composeRule = createComposeRule()
 
     @Test
-    fun missingReceiver_blocksSaveAndExposesValidationSemantics() {
-        val repository = FakeAfternoteRepository.strict()
+    fun emptyReceivers_saveProceedsWithoutValidationError() {
+        // 수신자는 전 카테고리 선택 항목(#951 합의·서버 계약) — 비워 둔 채로 저장이 그대로 진행돼야 한다.
+        val repository =
+            FakeAfternoteRepository.strict().apply {
+                onCreateSocial = { Result.success(41L) }
+            }
         val viewModel = viewModel(repository, afternoteEditorSavedStateHandle(AfternoteType.SOCIAL_NETWORK))
         composeRule.setContent {
             val uiState by viewModel.uiState.collectAsStateWithLifecycle()
-            AfternoteTheme {
-                (uiState.error as? AfternoteEditorError.Validation)?.let {
-                    Text(stringResource(it.reason.messageResId))
-                }
-            }
+            AfternoteTheme { Text(uiState.savedId?.toString().orEmpty()) }
         }
 
         composeRule.runOnIdle {
@@ -59,13 +54,10 @@ class AfternoteAuthorTest {
                 memorialMedia = SaveAfternoteMemorialMedia(),
             )
         }
+        composeRule.waitUntil(timeoutMillis = 5_000) { viewModel.uiState.value.savedId == 41L }
 
-        composeRule.onNodeWithText("수신자를 한 명 이상 선택해 주세요.").assertIsDisplayed()
-        assertEquals(0, repository.socialPayloads.size)
-        assertEquals(
-            AfternoteEditorError.Validation(AfternoteValidationError.RECEIVERS_REQUIRED),
-            viewModel.uiState.value.error,
-        )
+        assertNull(viewModel.uiState.value.error)
+        assertEquals(emptyList<Long>(), repository.socialPayloads.single().receiverIds)
     }
 
     @Test
diff --git a/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorProcessingMethodDefaultsInteractionTest.kt b/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorProcessingMethodDefaultsInteractionTest.kt
index ccaffc436b..1a5cfbc800 100644
--- a/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorProcessingMethodDefaultsInteractionTest.kt
+++ b/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorProcessingMethodDefaultsInteractionTest.kt
@@ -39,6 +39,8 @@ class AfternoteEditorProcessingMethodDefaultsInteractionTest {
                     onRegisterClick = {},
                     snackbarMessage = null,
                     onSnackbarMessageConsumed = {},
+                    validationMessage = null,
+                    onValidationMessageConsumed = {},
                     content = {},
                     shouldDeferBaselineCapture =
                         shouldDeferEditorBaselineCapture(
diff --git a/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorValidationDialogTest.kt b/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorValidationDialogTest.kt
new file mode 100644
index 0000000000..0efadd7e68
--- /dev/null
+++ b/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorValidationDialogTest.kt
@@ -0,0 +1,55 @@
+package com.afternote.feature.afternote.presentation.author.editor
+
+import androidx.activity.ComponentActivity
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.test.assertIsDisplayed
+import androidx.compose.ui.test.junit4.v2.createAndroidComposeRule
+import androidx.compose.ui.test.onNodeWithText
+import androidx.compose.ui.test.performClick
+import com.afternote.core.ui.theme.AfternoteTheme
+import com.afternote.feature.afternote.presentation.author.editor.state.EditorFormState
+import org.junit.Assert.assertEquals
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.robolectric.RobolectricTestRunner
+import org.robolectric.annotation.Config
+
+@RunWith(RobolectricTestRunner::class)
+@Config(sdk = [35])
+class AfternoteEditorValidationDialogTest {
+    @get:Rule
+    val composeRule = createAndroidComposeRule<ComponentActivity>()
+
+    @Test
+    fun `검증 실패는 확인 팝업으로 표시하고 확인 시 소비한다`() {
+        var consumed = 0
+        val message = "서비스명: 애프터노트를 등록하려면 서비스를 먼저 선택해 주세요."
+        var validationMessage by mutableStateOf<String?>(message)
+
+        composeRule.setContent {
+            AfternoteTheme {
+                AfternoteEditorScreen(
+                    form = EditorFormState(),
+                    onBackClick = {},
+                    onRegisterClick = {},
+                    snackbarMessage = null,
+                    onSnackbarMessageConsumed = {},
+                    content = {},
+                    validationMessage = validationMessage,
+                    onValidationMessageConsumed = {
+                        consumed += 1
+                        validationMessage = null
+                    },
+                )
+            }
+        }
+
+        composeRule.onNodeWithText(message).assertIsDisplayed()
+        composeRule.onNodeWithText("확인").performClick()
+
+        composeRule.runOnIdle { assertEquals(1, consumed) }
+    }
+}
diff --git a/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorValidationEventTest.kt b/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorValidationEventTest.kt
index 8a1a78045a..66fb376d25 100644
--- a/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorValidationEventTest.kt
+++ b/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorValidationEventTest.kt
@@ -87,7 +87,14 @@ class AfternoteEditorValidationEventTest {
 
     private fun AfternoteEditorViewModel.saveInvalidSocialAfternote() {
         saveAfternote(
-            payload = RegisterAfternotePayload(serviceName = "", date = "2026.08.27"),
+            payload =
+                RegisterAfternotePayload(
+                    serviceName = "",
+                    date = "2026.08.27",
+                    accountId = "account",
+                    password = "password",
+                    processingMethods = listOf("계정 삭제"),
+                ),
             selectedReceiverIds = listOf(1L),
             memorialMedia = SaveAfternoteMemorialMedia(),
         )
diff --git a/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorValidatorTest.kt b/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorValidatorTest.kt
index c3a934b2f0..ecda0518d6 100644
--- a/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorValidatorTest.kt
+++ b/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorValidatorTest.kt
@@ -20,35 +20,43 @@ class AfternoteEditorValidatorTest {
         val error =
             AfternoteEditorValidator.validate(
                 form = EditorFormState(typeForm = AfternoteTypeForm.Social()),
-                payload = payload.copy(processingMethods = listOf("계정 삭제")),
-                selectedReceiverIds = listOf(1L),
+                payload = payload,
             )
 
         assertEquals(AfternoteValidationError.ACCOUNT_CREDENTIALS_REQUIRED, error)
     }
 
     @Test
-    fun `계정형 폼은 처리 방법이 한 개 이상 필요하다`() {
+    fun `계정형 폼은 처리 방법이 없어도 저장할 수 있다`() {
         val error =
             AfternoteEditorValidator.validate(
                 form = EditorFormState(typeForm = AfternoteTypeForm.Social()),
                 payload = payload.copy(accountId = "account", password = "password"),
-                selectedReceiverIds = listOf(1L),
             )
 
-        assertEquals(AfternoteValidationError.PROCESSING_METHODS_REQUIRED, error)
+        assertNull(error)
     }
 
     @Test
-    fun `갤러리 폼은 처리 방법이 한 개 이상 필요하다`() {
+    fun `갤러리 폼은 처리 방법이 없어도 저장할 수 있다`() {
         val error =
             AfternoteEditorValidator.validate(
                 form = EditorFormState(typeForm = AfternoteTypeForm.Gallery()),
                 payload = payload,
-                selectedReceiverIds = listOf(1L),
             )
 
-        assertEquals(AfternoteValidationError.PROCESSING_METHODS_REQUIRED, error)
+        assertNull(error)
+    }
+
+    @Test
+    fun `필수 입력이 둘 이상 비면 복수 누락 오류를 반환한다`() {
+        val error =
+            AfternoteEditorValidator.validate(
+                form = EditorFormState(typeForm = AfternoteTypeForm.Social()),
+                payload = payload.copy(serviceName = ""),
+            )
+
+        assertEquals(AfternoteValidationError.MULTIPLE_REQUIRED_FIELDS, error)
     }
 
     @Test
@@ -57,7 +65,6 @@ class AfternoteEditorValidatorTest {
             AfternoteEditorValidator.validate(
                 form = EditorFormState(typeForm = AfternoteTypeForm.Memorial()),
                 payload = payload,
-                selectedReceiverIds = listOf(1L),
             )
 
         assertNull(error)
diff --git a/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/EditorLeaveMessageBlocksTest.kt b/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/EditorLeaveMessageBlocksTest.kt
index 4079f0e249..421b982865 100644
--- a/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/EditorLeaveMessageBlocksTest.kt
+++ b/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/EditorLeaveMessageBlocksTest.kt
@@ -156,8 +156,12 @@ class EditorLeaveMessageBlocksTest {
     private fun validateSocial(vararg blocks: EditorMessageTextBlock): AfternoteValidationError? =
         AfternoteEditorValidator.validate(
             form = EditorFormState(typeForm = AfternoteTypeForm.Social()),
-            payload = payloadOf(*blocks),
-            selectedReceiverIds = listOf(1L),
+            payload =
+                payloadOf(*blocks).copy(
+                    accountId = "account",
+                    password = "password",
+                    processingMethods = listOf("계정 삭제"),
+                ),
         )
 
     private fun payloadOf(vararg blocks: EditorMessageTextBlock) =
diff --git a/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/EditorTouchTargetTest.kt b/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/EditorTouchTargetTest.kt
index 77bb98284f..5d3712d631 100644
--- a/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/EditorTouchTargetTest.kt
+++ b/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/EditorTouchTargetTest.kt
@@ -157,6 +157,8 @@ class EditorTouchTargetTest {
                     onRegisterClick = { registerClicks++ },
                     snackbarMessage = null,
                     onSnackbarMessageConsumed = {},
+                    validationMessage = null,
+                    onValidationMessageConsumed = {},
                     content = {},
                 )
             }
diff --git a/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/selection/EditorSelectionDropdownInteractionTest.kt b/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/selection/EditorSelectionDropdownInteractionTest.kt
new file mode 100644
index 0000000000..af480b882a
--- /dev/null
+++ b/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/selection/EditorSelectionDropdownInteractionTest.kt
@@ -0,0 +1,51 @@
+package com.afternote.feature.afternote.presentation.author.editor.selection
+
+import androidx.activity.ComponentActivity
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.padding
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.test.assertCountEquals
+import androidx.compose.ui.test.hasClickAction
+import androidx.compose.ui.test.hasText
+import androidx.compose.ui.test.junit4.v2.createAndroidComposeRule
+import androidx.compose.ui.test.onNodeWithContentDescription
+import androidx.compose.ui.test.onNodeWithText
+import androidx.compose.ui.unit.dp
+import com.afternote.core.ui.theme.AfternoteTheme
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.robolectric.RobolectricTestRunner
+import org.robolectric.annotation.Config
+
+@RunWith(RobolectricTestRunner::class)
+@Config(sdk = [35])
+class EditorSelectionDropdownInteractionTest {
+    @get:Rule
+    val composeRule = createAndroidComposeRule<ComponentActivity>()
+
+    @Test
+    fun `비활성 드롭다운은 셰브론과 클릭 동작 및 펼친 메뉴를 노출하지 않는다`() {
+        composeRule.setContent {
+            AfternoteTheme {
+                Box(modifier = Modifier.padding(24.dp)) {
+                    EditorSelectionDropdown(
+                        label = "종류",
+                        selectedValue = "소셜 네트워크",
+                        options = listOf("갤러리 및 파일"),
+                        optionLabel = { it },
+                        onValueSelected = {},
+                        expanded = true,
+                        onExpandedChange = {},
+                        enabled = false,
+                    )
+                }
+            }
+        }
+
+        composeRule.onNodeWithText("소셜 네트워크").assertExists()
+        composeRule.onAllNodes(hasText("소셜 네트워크") and hasClickAction()).assertCountEquals(0)
+        composeRule.onNodeWithContentDescription("드롭다운").assertDoesNotExist()
+        composeRule.onNodeWithText("갤러리 및 파일").assertDoesNotExist()
+    }
+}