Seaquel
SQL Server error code

SQL Server error 4819

SQL Server raises error 4819 at severity 16, which marks a problem with the query or data that you can correct.

Cannot bulk load. The bulk data stream was incorrectly specified as sorted or the data violates a uniqueness constraint imposed by the target table. Sort order incorrect for the following two rows: primary key of first row: %s, primary key of second row: %s.
Msg4819
Severity16
Group4000–4999

Source: Database Engine events and errors