This error message tells you that the record type Defect does not exist.

该出错信息会告诉您记录类型Defect并不存在。

youdao

The Update and Delete buttons use exception handlers to display the error message if something goes wrong (such as referential integrity violations when deleting a record).

如果发生错误(例如删除记录时违反了参照完整性)，Update和Delete按钮则使用异常处理程序来显示出错消息。

youdao