Seaquel
SQL Server error code

SQL Server error 4966

SQL Server raises error 4966 at severity 16, which marks a problem with the query or data that you can correct.

ALTER TABLE SWITCH statement failed. Computed column '%.*ls' defined as '%.*ls' in table '%.*ls' is different from the same column in table '%.*ls' defined as '%.*ls'.
Msg4966
Severity16
Group4000–4999

Source: Database Engine events and errors