万一不符合要求，就应该用reject()方法来创建要绑定到预订对象的而不是到域的对象错误（object error）。
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error object Error 对象
graphical object error 图形对象错误
error object 错误对象 ; 错误物件 ; 错误处理对象
object coordinates error 对象坐标错误
TYPICAL OBJECT TEMPERATURE ERROR 典型的对象温度误差 ; 典型物体温度错误 ; 典型对象温度错误
error of object 客体错误
object detection error rate 误检率
the error of the object 客体错误
Each object also contains an error status and error message.
各个对象还包含一个错误状态和错误消息。
youdao
"Error report, because there was a missing object."
的错误报告，因为有一个丢失的对象。
If an object method needs to report an error, then a return code should be used.
假如一个对象的方法需要报告一个错误，这时一个返回码需要用到。
The larger the object, the more likely you are to run into an error.
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Until access has been granted, the ABAddressBookRef object will not contain any contacts, and any attempt to modify contacts fails with akABOperationNotPermittedByUserError error.
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