Seaquel
SQL Server error code

SQL Server error 3035

SQL Server raises error 3035 at severity 16, which marks a problem with the query or data that you can correct.

Cannot perform a differential backup for database "%ls", because a current database backup does not exist. Perform a full database backup by reissuing BACKUP DATABASE, omitting the WITH DIFFERENTIAL option.
Msg3035
Severity16
Group3000–3999

Source: Database Engine events and errors