Seaquel
SQL Server error code

SQL Server error 1786

SQL Server raises error 1786 at severity 16, which marks a problem with the query or data that you can correct.

Either column '%.*ls.%.*ls' or referencing column '%.*ls.%.*ls' in foreign key '%.*ls' is a timestamp column. This data type cannot be used with cascading referential integrity constraints.
Msg1786
Severity16
Group1000–1999

Source: Database Engine events and errors