Seaquel
SQL Server error code

SQL Server error 4446

SQL Server raises error 4446 at severity 16, which marks a problem with the query or data that you can correct.

Cannot update the UNION ALL view "%.*ls" because the definition of column "%.*ls" of view "%.*ls" is used by another view column.
Msg4446
Severity16
Group4000–4999

Source: Database Engine events and errors