Seaquel
SQL Server error code

SQL Server error 8183

SQL Server raises error 8183 at severity 16, which marks a problem with the query or data that you can correct.

Only UNIQUE or PRIMARY KEY constraints can be created on computed columns, while CHECK, FOREIGN KEY, and NOT NULL constraints require that computed columns be persisted.
Msg8183
Severity16
Group8000–8999

Source: Database Engine events and errors