Seaquel
SQL Server error code

SQL Server error 9528

SQL Server raises error 9528 at severity 16, which marks a problem with the query or data that you can correct.

In the XML content that is supplied for the column set '%.*ls', the '%.*ls' attribute on the element '%.*ls' is not valid. The attribute is valid only for sparse columns of data type sql_variant.
Msg9528
Severity16
Group9000–9999

Source: Database Engine events and errors