Seaquel
SQL Server error code

SQL Server error 6277

SQL Server raises error 6277 at severity 16, which marks a problem with the query or data that you can correct.

ALTER ASSEMBLY failed because the MaxLen attribute of type '%s' would change in the updated assembly. Persisted types are not allowed to change MaxLen attribute.
Msg6277
Severity16
Group6000–6999

Source: Database Engine events and errors