Seaquel
SQL Server error code

SQL Server error 9928

SQL Server raises error 9928 at severity 16, which marks a problem with the query or data that you can correct.

Computed column '%.*ls' cannot be used for full-text search because it is nondeterministic or imprecise nonpersisted computed column.
Msg9928
Severity16
Group9000–9999

Source: Database Engine events and errors