If all attempts fail, the message is placed back in the retry queue.
如果所有尝试都失败，便会将讯息放回重试伫列中。
The number of current notification batches in the delivery retry queue.
传送重试队列中当前具有的批通知数。
The number of current notification batches in the delivery retry queue. This counter is updated periodically when the application is enabled.
传送重试队列中当前具有的批通知数。启用应用程序时，此计数器会定期进行更新。
If the application fails to access the message after the specified number of immediate retries, the message is sent to a retry queue.
在立即重试达指定次数后，如果应用程序无法存取讯息，讯息就会传送至重试伫列。
If the application fails to access the message after the specified number of immediate retries, the message is sent to a retry queue.
在立即重试达指定次数后，如果应用程序无法存取讯息，讯息就会传送至重试伫列。
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