The message number %u or specified language version does not exist.

Error Message:
Msg 15179, Level 16, State 1, Procedure sp_dropmessage, Line 54
The message number %u or specified language version does not exist.

Severity level:
16.

Description:
This error message appears when you try to drop a non-existing message.

Consequences:
The T-SQL statement can be parsed, but causes the error at runtime.

Resolution:
Error of the Severity level 16 are generated by the user and are corrigible by the user. The statement cannot be run this way. You can only drop a message that exists.

Versions:
All versions of SQL Server.

Example(s):
EXEC sys.sp_dropmessage 50001

Remarks:
In the above example we try to drop the message with ID 50001. Since this message does not exists, the error is raised.