diff --git a/pages/picking/picking.vue b/pages/picking/picking.vue
index 9ff9360..0ee5978 100644
--- a/pages/picking/picking.vue
+++ b/pages/picking/picking.vue
@@ -651,6 +651,14 @@
 			isTaskConflict(error) {
 				return String(error?.code || '') === 'A0409' || Number(error?.statusCode) === 409
 			},
+			remoteFailureMessage(error, fallback = '操作失败') {
+				const raw = String(error?.message || '').trim()
+				const message = /^internal server error$/i.test(raw)
+					? '服务端处理异常，请联系管理员'
+					: (raw || fallback)
+				const reference = String(error?.requestId || error?.traceId || '').trim()
+				return reference ? `${message}（请求编号：${reference}）` : message
+			},
 			async refreshAfterTaskConflict(message) {
 				const requestedTaskId = this.remoteTaskId || this.currentBox.taskId
 				this.submitId = ''
@@ -1405,7 +1413,8 @@
 						await this.refreshAfterTaskConflict(error.message || '订舱、装柜关联或证据状态已变化，请刷新后重试')
 						return
 					}
-					this.remoteError = error.network ? '网络失败，装柜完成未提交' : (error.message || '装柜完成失败')
+					this.debugSubmit('complete.error', { message: error.message || '', code: error.code || '', statusCode: error.statusCode || '', requestIdFromServer: error.requestId || '', traceId: error.traceId || '' })
+					this.remoteError = error.network ? '网络失败，装柜完成未提交' : this.remoteFailureMessage(error, '装柜完成失败')
 					this.showToast('装柜完成失败', 'error')
 				}
 				finally {
diff --git a/tests/picking-evidence-stage.test.mjs b/tests/picking-evidence-stage.test.mjs
index 313a40a..f04b8b8 100644
--- a/tests/picking-evidence-stage.test.mjs
+++ b/tests/picking-evidence-stage.test.mjs
@@ -243,3 +243,12 @@ test('picking mutations stay closed until the canonical task has been claimed',
 		assert.match(body, /if \(!this\.requirePickingOperation\(\)\) return/, `${method} should wait for claim`)
 	}
 })
+
+test('completion shows a Chinese server failure with a request correlation id', () => {
+	assert.match(page, /remoteFailureMessage\(error, fallback = '操作失败'\)/)
+	assert.match(page, /\^internal server error\$\/i/)
+	assert.match(page, /服务端处理异常，请联系管理员/)
+	assert.match(page, /请求编号/)
+	assert.match(page, /requestIdFromServer: error\.requestId/)
+	assert.match(page, /this\.remoteFailureMessage\(error, '装柜完成失败'\)/)
+})