Seaquel
SQL Server error code

SQL Server error 5250

SQL Server raises error 5250 at severity 16, which marks a problem with the query or data that you can correct.

Database error: %ls page %S_PGID for database '%.*ls' (database ID %d) is invalid. This error cannot be repaired. You must restore from backup.
Msg5250
NameDBCC4_CRITICAL_DATABASE_PAGE_CORRUPT
Severity16
Group5000–5999

What it means

A file header page or boot page in the specified database is corrupted.

Source: Database Engine events and errors