SQL Server error code
SQL Server error 6991
SQL Server raises error 6991 at severity 16, which marks a problem with the query or data that you can correct.
Invalid restriction for type '%s'. If the base type has empty content, then the derived type must as well, and if the derived type has empty content, then the base type must be emptiable.
| Msg | 6991 |
|---|---|
| Severity | 16 |
| Group | 6000–6999 |