Seaquel
SQL Server error code

SQL Server error 5861

SQL Server raises error 5861 at severity 16, which marks a problem with the query or data that you can correct.

A %S_MSG with id %d does not exist on this system. Use sys.dm_os_schedulers to locate valid %S_MSGs for this system.
Msg5861
Severity16
Group5000–5999

Source: Database Engine events and errors