Seaquel
SQL Server error code

SQL Server error 9817

SQL Server raises error 9817 at severity 16, which marks a problem with the query or data that you can correct.

The specified column set value causes the estimated row size to be at least %d bytes. This exceeds the maximum allowed row size of %d bytes. To reduce the row size, reduce the number of columns specified in the column set.
Msg9817
Severity16
Group9000–9999

Source: Database Engine events and errors