You can enter a user-defined default value in the output port if you want the Integration Service to write a specific message in the session log with the skipped row. The system default is ERROR (‘transformation error’), and the Integration Service writes the message ‘transformation error’ in the session log along with the skipped row. You can replace ‘transformation error’ if you want to write a different message.

When you enable row error logging, the Integration Service writes error messages to the error log instead of the session log and the Integration Service does not log Transaction Control transformation rollback or commit errors. If you want to write rows to the session log in addition to the row error log, you can enable verbose data tracing.