Seaquel
SQL Server error code

SQL Server error 6984

SQL Server raises error 6984 at severity 16, which marks a problem with the query or data that you can correct.

Invalid restriction for type '%s'. The element in the restricted type must be in one of the namespaces allowed by the base type's wildcard.
Msg6984
Severity16
Group6000–6999

Source: Database Engine events and errors