Seaquel
SQL Server error code

SQL Server error 7724

SQL Server raises error 7724 at severity 16, which marks a problem with the query or data that you can correct.

Computed column cannot be used as a partition key if it is not persisted. Partition key column '%.*ls' in table '%.*ls' is not persisted.
Msg7724
Severity16
Group7000–7999

Source: Database Engine events and errors