Seaquel
SQL Server error code

SQL Server error 4319

SQL Server raises error 4319 at severity 16, which marks a problem with the query or data that you can correct.

A previous restore operation was interrupted and did not complete processing on file '%ls'. Either restore the backup set that was interrupted or restart the restore sequence.
Msg4319
Severity16
Group4000–4999

Source: Database Engine events and errors