Seaquel
SQL Server error code

SQL Server error 1215

SQL Server raises error 1215 at severity 16, which marks a problem with the query or data that you can correct.

A conflicting ABORT_AFTER_WAIT = BLOCKERS request is waiting for existing transactions to roll back. This request cannot be executed. Please retry when the previous request is completed.
Msg1215
Severity16
Group1000–1999

Source: Database Engine events and errors