diff --git a/api/pda-loading.js b/api/pda-loading.js
index 3a0ab9d..a26cf55 100644
--- a/api/pda-loading.js
+++ b/api/pda-loading.js
@@ -101,6 +101,15 @@ export function claimContainerPickingTask(taskId, expectedAssignmentVersion, ope
   })
 }
 
+export function getPickingInventorySnapshot(taskId, warehouseId) {
+  if (!taskId) throw new Error('缺少拣货任务标识，无法查询实时库存')
+  if (!warehouseId) throw new Error('缺少作业仓库标识，无法查询实时库存')
+  return request({
+    url: `/first-leg/pda-loading/tasks/${encodeURIComponent(taskId)}/inventory-snapshot?warehouseId=${encodeURIComponent(warehouseId)}`,
+    method: 'GET'
+  })
+}
+
 function itemAction(taskId, itemId, path, payload, operationId) {
   // Concrete routes include /items/${encodeURIComponent(itemId)}/pick, /items/${encodeURIComponent(itemId)}/partial and /items/${encodeURIComponent(itemId)}/skip.
   if (!taskId || itemId == null) throw new Error('缺少拣货任务或明细标识，无法提交')
@@ -124,12 +133,13 @@ export function skipContainerItem(taskId, itemId, payload = {}) {
   return itemAction(taskId, itemId, 'skip', payload, payload.operationId)
 }
 
-export async function submitContainerPickingBatch(task, actions, { warehouseId, operationId } = {}) {
+export async function submitContainerPickingBatch(task, actions, { warehouseId, operationId, inventorySnapshotToken } = {}) {
   if (!task?.taskId) throw new Error('缺少拣货任务标识，无法提交')
   const submitOperationId = operationId || `submit-${task.taskId}-${task.containerNo || ''}-${task.version ?? task.pickingVersion ?? ''}`
   const expectedVersion = task.version ?? task.pickingVersion
   if (expectedVersion == null) throw new Error('缺少拣货任务版本，无法整批提交')
   if (!warehouseId) throw new Error('缺少作业仓库标识，无法整批提交')
+  if (!inventorySnapshotToken) throw new Error('缺少实时库存快照，请刷新后重试')
   if (!task.containerNo) throw new Error('缺少柜号，无法整批提交')
   const items = (actions || []).map((action) => ({
     itemId: action.itemId,
@@ -145,7 +155,7 @@ export async function submitContainerPickingBatch(task, actions, { warehouseId,
     url: `/first-leg/pda-loading/tasks/${encodeURIComponent(task.taskId)}/batch`,
     method: 'POST',
     header: { 'Idempotency-Key': stableIdempotencyKey(submitOperationId) },
-    data: { warehouseId, containerNo: task.containerNo, expectedVersion, items }
+    data: { warehouseId, containerNo: task.containerNo, expectedVersion, inventorySnapshotToken, items }
   })
 }
 
diff --git a/pages/picking/picking.vue b/pages/picking/picking.vue
index 4104dae..dda7d44 100644
--- a/pages/picking/picking.vue
+++ b/pages/picking/picking.vue
@@ -324,7 +324,7 @@
 	import { navigateBackOr } from '@/utils/navigation.js'
 	import { startScanBroadcast } from '@/utils/scan-broadcast.js'
 	import { playErrorSound, playSuccessSound } from '@/utils/audio-feedback.js'
-	import { claimContainerPickingTask, completeLoading, completePicking, EVIDENCE_SLOTS, getContainerPickingTask, getEvidence, getPickingTask, isRemoteReady, normalizePickingTask, submitContainerPickingBatch, uploadEvidenceFile, upsertEvidence, voidEvidence } from '@/api/pda-loading.js'
+	import { claimContainerPickingTask, completeLoading, completePicking, EVIDENCE_SLOTS, getContainerPickingTask, getEvidence, getPickingInventorySnapshot, getPickingTask, isRemoteReady, normalizePickingTask, submitContainerPickingBatch, uploadEvidenceFile, upsertEvidence, voidEvidence } from '@/api/pda-loading.js'
 	import { createEvidenceUploadQueue } from '@/utils/evidence-upload-queue.js'
 	import { isOnline } from '@/utils/network.js'
 	import { stableOperationId } from '@/utils/idempotency.js'
@@ -909,6 +909,8 @@
 						if (this.pickingVersion === null) throw new Error('缺少拣货版本号 pickingVersion，无法提交')
 						const submitId = this.submitId || stableOperationId('submit', `${session.currentUser?.id || 'operator'}-${this.remoteTaskId}-${this.currentBox.boxNo}`, { itemStates: this.itemStates, partialQuantities: this.partialQuantities, incompleteReason })
 						this.submitId = submitId
+						const warehouseId = this.currentBox.warehouseId || session.currentUser?.warehouseId || session.currentUser?.warehouse
+						const inventorySnapshot = await getPickingInventorySnapshot(this.remoteTaskId, warehouseId)
 						const actions = this.currentBox.items.map((item) => {
 							const status = this.itemState(item)
 							const itemId = item.taskItemId ?? item.remoteItemId ?? item.id
@@ -918,12 +920,14 @@
 							if (incompleteReason) return { type: 'SKIP', itemId, reason: `${incompleteReason}（提交时确认未拣）`, version: Number(item.version || 0) }
 							return null
 						}).filter(Boolean)
-						await submitContainerPickingBatch({ taskId: this.remoteTaskId, containerNo: this.currentBox.boxNo, version: Number(this.pickingVersion) }, actions, { warehouseId: this.currentBox.warehouseId || session.currentUser?.warehouseId || session.currentUser?.warehouse, operationId: submitId })
+						await submitContainerPickingBatch({ taskId: this.remoteTaskId, containerNo: this.currentBox.boxNo, version: Number(this.pickingVersion) }, actions, { warehouseId, operationId: submitId, inventorySnapshotToken: inventorySnapshot?.snapshotToken })
 						// Legacy inbound completePicking(expectedVersion: Number(this.pickingVersion)) remains adapter-only; cabinet tasks use item actions.
 					} catch (error) {
 						const versionConflict = error.code === 'A0409' || error.statusCode === 409
-						this.remoteError = versionConflict ? '任务版本已变化，请刷新后重试' : (error.network ? '网络失败，拣货完成未提交，请重试' : (error.message || '拣货完成失败'))
-						this.showToast(versionConflict ? '任务版本已变化，请刷新后重试' : '拣货完成未提交', 'error')
+						const inventoryConflict = versionConflict && /库存/.test(error.message || '')
+						const conflictMessage = inventoryConflict ? '库存已变化，请刷新后重试' : '任务版本已变化，请刷新后重试'
+						this.remoteError = versionConflict ? conflictMessage : (error.network ? '网络失败，拣货完成未提交，请重试' : (error.message || '拣货完成失败'))
+						this.showToast(versionConflict ? conflictMessage : '拣货完成未提交', 'error')
 						return
 					} finally { this.submitting = false }
 				}
diff --git a/tests/pda-loading-api.test.mjs b/tests/pda-loading-api.test.mjs
index 214bd05..d669203 100644
--- a/tests/pda-loading-api.test.mjs
+++ b/tests/pda-loading-api.test.mjs
@@ -59,6 +59,7 @@ test('PDA cabinet picking adapter claims online and submits one atomic batch', (
 	assert.match(source, /\/first-leg\/pda-loading\/tasks\?/)
 	assert.match(source, /tasks\/\$\{encodeURIComponent\(taskId\)\}\/claim/)
 	assert.match(source, /tasks\/\$\{encodeURIComponent\(task\.taskId\)\}\/batch/)
+	assert.match(source, /tasks\/\$\{encodeURIComponent\(taskId\)\}\/inventory-snapshot\?warehouseId=/)
 	assert.match(source, /submitContainerPickingBatch/)
 	assert.match(source, /stableIdempotencyKey/)
 	assert.match(source, /Math\.imul\(hash, 16777619\)/)
@@ -66,7 +67,9 @@ test('PDA cabinet picking adapter claims online and submits one atomic batch', (
 	assert.match(page, /claimContainerPickingTask\(/)
 	assert.match(page, /submitContainerPickingBatch\(/)
 	assert.match(page, /任务版本已变化，请刷新后重试/)
-	assert.match(source, /data: \{ warehouseId, containerNo: task\.containerNo, expectedVersion, items \}/)
+	assert.match(source, /data: \{ warehouseId, containerNo: task\.containerNo, expectedVersion, inventorySnapshotToken, items \}/)
+	assert.match(page, /await getPickingInventorySnapshot\([\s\S]*await submitContainerPickingBatch/)
+	assert.match(page, /库存已变化，请刷新后重试/)
 	assert.doesNotMatch(source.match(/export async function submitContainerPickingBatch[\s\S]*?\n\}/)?.[0] || '', /for \(/)
 	assert.match(page, /version: Number\(item\.version \|\| 0\)/)
 	assert.match(page, /refreshTask/)