style：出库单据-托盘码逻辑优化

src/views/erp/stock/out/components/StockOutItemForm.vue

@@ -128,7 +128,8 @@
         <template #default="{ row, $index }">
           <el-form-item :prop="`${$index}.pallets`" :rules="formRules.pallets" class="mb-0px!">
             <el-input v-model="row.palletCode" readonly :clearable="!disabled"
-              :placeholder="t('ErpStock.Item.placeholderPalletCode')" @click="openPalletSelectDialog(row)"
+              :disabled="isPalletCodeInputDisabled(row)"
+              :placeholder="getPalletCodePlaceholder(row)" @click="openPalletSelectDialog(row)"
               @clear="clearPallet(row)" />
           </el-form-item>
         </template>
@@ -1026,7 +1027,21 @@ const handleOutModeChange = (row: any) => {
   clearPallet(row)
 }
 
+const isPalletCodeInputDisabled = (row: any) => {
+  return !props.disabled && !row?.productId
+}
+
+const getPalletCodePlaceholder = (row: any) => {
+  return isPalletCodeInputDisabled(row)
+    ? t('ErpStock.Item.placeholderProduct')
+    : t('ErpStock.Item.placeholderPalletCode')
+}
+
 const openPalletSelectDialog = async (row: any) => {
+  if (isPalletCodeInputDisabled(row)) {
+    message.warning(t('ErpStock.Item.placeholderProduct'))
+    return
+  }
   currentSelectRow.value = row
   selectedPalletRows.value = getInitialSelectedPalletRows(row)
   await loadRowsWarehouseAreas(selectedPalletRows.value)
@@ -1160,7 +1175,12 @@ const handlePalletPackageCountChange = (value: number | undefined, pallet: any)
   const packageCount = Number(value)
   if (!Number.isFinite(packageCount) || packageCount <= availablePackageCount) return
   pallet.packageCount = availablePackageCount
-  message.alertWarning(t('ErpStock.Item.outPackageCountExceededWarning', { count: availablePackageCount }))
+  message.alertWarning(
+    t('ErpStock.Item.outPackageCountExceededWarning', {
+      code: pallet?.code || '-',
+      count: availablePackageCount
+    })
+  )
 }
 
 const getPalletOutCount = (pallet: any) => {