Seaquel
SQL Server error code

SQL Server error 7396

SQL Server raises error 7396 at severity 16, which marks a problem with the query or data that you can correct.

Varchar(max), nvarchar(max), varbinary(max) and large CLR type data types are not supported as return value or output parameter to remote queries.
Msg7396
Severity16
Group7000–7999

Source: Database Engine events and errors