When you configure a session, you can choose to log row errors in a central location. When a row error occurs, the PowerCenter Integration Service process logs error information that allows you to determine the cause and source of the error. The PowerCenter Integration Service process logs information such as source name, row ID, current row data, transformation, timestamp, error code, error message, repository name, folder name, session name, and mapping information.
When you enable flat file logging, by default, the PowerCenter Integration Service process saves the file in the directory entered for the service process variable $PMBadFileDir.