Seaquel
SQL Server error code

SQL Server error 8199

SQL Server raises error 8199 at severity 16, which marks a problem with the query or data that you can correct.

In EXECUTE <procname>, procname can only be a literal or variable of type char, varchar, nchar, or nvarchar.
Msg8199
Severity16
Group8000–8999

Source: Database Engine events and errors