Seaquel
SQL Server error code

SQL Server error 1997

SQL Server raises error 1997 at severity 16, which marks a problem with the query or data that you can correct.

Could not convert the XML or spatial index '%.*ls' to a relational index by using the DROP_EXISTING option. Drop the XML or spatial index and create a relational index with the same name.
Msg1997
Severity16
Group1000–1999

Source: Database Engine events and errors