diff --git a/src/main/resources/mapper/stock/StockTransactionLogDao.xml b/src/main/resources/mapper/stock/StockTransactionLogDao.xml
index 545afb8..7b5fff8 100644
--- a/src/main/resources/mapper/stock/StockTransactionLogDao.xml
+++ b/src/main/resources/mapper/stock/StockTransactionLogDao.xml
@@ -59,12 +59,12 @@
           AND transaction_id = #{transactionId}
     </update>
 
-    <!-- 批量更新同步状态为失败 -->
+    <!-- 批量更新同步状态为失败，errorMsg超过500字符时截断 -->
     <update id="updateSyncedFailure">
         UPDATE StockTransactionLog
         SET synced_flag = 'N',
             synced_time = GETDATE(),
-            synced_error_msg = #{errorMsg}
+            synced_error_msg = LEFT(#{errorMsg}, 500)
         WHERE site = #{site}
           AND bu_no = #{buNo}
           AND transaction_id = #{transactionId}