Seaquel
SQL Server error code

SQL Server error 1778

SQL Server raises error 1778 at severity 16, which marks a problem with the query or data that you can correct.

Column '%.*ls.%.*ls' is not the same data type as referencing column '%.*ls.%.*ls' in foreign key '%.*ls'.
Msg1778
Severity16
Group1000–1999

Source: Database Engine events and errors