SQL Server Error Code – 19431 always on availability groups transport

In this blog post, you’ll learn more about the SQL Server Error Code 19431 and the error message description that is shown

SQL Server Error Code

19431

SQL Server Error Description for the Code :19431

Always On Availability Groups transport for availability database “%.*ls” has hit flow control boundary with log block whose LSN is %S_LSN. This error happens when secondary replica doesn’t have buffer to receive a new message from primary. This is an informational message only. No user action is required.

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