Seaquel
SQL Server error code

SQL Server error 7670

SQL Server raises error 7670 at severity 16, which marks a problem with the query or data that you can correct.

Column '%.*ls' cannot be used for full-text search because it is not a character-based, XML, image or varbinary(max) type column or it is encrypted.
Msg7670
Severity16
Group7000–7999

Source: Database Engine events and errors