The sending application can request that a negative acknowledgment message be returned in such a case.
发送应用程序可请求在此情况下返回否定的确认消息。
The sending application can request a negative acknowledgment message be returned to the sending application if a message was rejected.
如果讯息被拒绝，传送的应用程序可以要求传回负认可讯息至传送的应用程序。
The sending application can request a negative acknowledgment message be returned to the sending application if a message was rejected.
如果讯息被拒绝，传送的应用程序可以要求传回负认可讯息至传送的应用程序。
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