diff --git a/src/rootserver/ddl_task/ob_index_build_task.cpp b/src/rootserver/ddl_task/ob_index_build_task.cpp
index 2c9868f1d5..2364b0e07d 100755
--- a/src/rootserver/ddl_task/ob_index_build_task.cpp
+++ b/src/rootserver/ddl_task/ob_index_build_task.cpp
@@ -1082,8 +1082,8 @@ int ObIndexBuildTask::update_column_checksum_calc_status(
     ret = OB_INVALID_ARGUMENT;
     LOG_WARN("invalid argument", K(ret), K(tablet_id));
   } else if (ObDDLTaskStatus::VALIDATE_CHECKSUM != task_status_) {
-    ret = OB_STATE_NOT_MATCH;
-    LOG_WARN("task status not match", K(ret), K(task_status_));
+    ret = OB_TASK_EXPIRED;
+    LOG_WARN("task expired", K(ret), K(task_status_));
   } else {
     if (OB_FAIL(wait_column_checksum_ctx_.update_status(tablet_id, ret_code))) {
       LOG_WARN("update column checksum calculation status failed", K(ret), K(tablet_id), K(ret_code));
diff --git a/src/share/schema/ob_table_schema.cpp b/src/share/schema/ob_table_schema.cpp
index 32171f1bbf..5fad0d97fc 100644
--- a/src/share/schema/ob_table_schema.cpp
+++ b/src/share/schema/ob_table_schema.cpp
@@ -4311,10 +4311,6 @@ int ObTableSchema::check_prohibition_rules(const ObColumnSchemaV2 &src_schema,
   // The column contains the check constraint to prohibit modification of the type in mysql mode
     ret = OB_NOT_SUPPORTED;
     LOG_USER_ERROR(OB_NOT_SUPPORTED, "Alter column with check constraint");
-  } else if (is_offline && OB_FAIL(check_has_trigger_on_table(schema_guard, is_enable))) {
-    LOG_WARN("failed to check alter column in trigger", K(ret));
-  } else if (is_enable) {
-    // do nothing, change/modify column is allowed on table with trigger(enable/disable).
   } else if (is_oracle_mode && src_schema.is_tbl_part_key_column()) {
   // Partition key prohibited to modify the type in oracle mode
     ret = OB_NOT_SUPPORTED;
@@ -4335,6 +4331,10 @@ int ObTableSchema::check_prohibition_rules(const ObColumnSchemaV2 &src_schema,
             && is_column_in_fk) {
     ret = OB_NOT_SUPPORTED;
     LOG_USER_ERROR(OB_NOT_SUPPORTED, "Alter column charset or collation with foreign key");
+  } else if (is_offline && OB_FAIL(check_has_trigger_on_table(schema_guard, is_enable))) {
+    LOG_WARN("failed to check alter column in trigger", K(ret));
+  } else if (is_enable) {
+    // do nothing, change/modify column is allowed on table with trigger(enable/disable).
   }
   return ret;
 }