Seaquel
SQL Server error code

SQL Server error 1996

SQL Server raises error 1996 at severity 16, which marks a problem with the query or data that you can correct.

Could not create index enforcing primary key constraint '%.*ls' using DROP_EXISTING option because table has an XML or spatial index. Drop the XML or spatial index, create the primary key constraint, and recreate the XML or spatial index.
Msg1996
Severity16
Group1000–1999

Source: Database Engine events and errors