Seaquel
SQL Server error code

SQL Server error 4971

SQL Server raises error 4971 at severity 16, which marks a problem with the query or data that you can correct.

ALTER TABLE SWITCH statement failed. Target table '%.*ls' has a column level check constraint '%.*ls' but the source table '%.*ls' does not have a corresponding constraint.
Msg4971
Severity16
Group4000–4999

Source: Database Engine events and errors