Seaquel
SQL Server error code

SQL Server error 7397

SQL Server raises error 7397 at severity 16, which marks a problem with the query or data that you can correct.

Remote function returned varchar(max), nvarchar(max), varbinary(max) or large CLR type value which is not supported.
Msg7397
Severity16
Group7000–7999

Source: Database Engine events and errors