Seaquel
SQL Server error code

SQL Server error 202

SQL Server raises error 202 at severity 16, which marks a problem with the query or data that you can correct.

Invalid type '%s' for WAITFOR. Supported data types are CHAR/VARCHAR, NCHAR/NVARCHAR, and DATETIME. WAITFOR DELAY supports the INT and SMALLINT data types.
Msg202
Severity16
Group0–999

Source: Database Engine events and errors