Map trace files
Map trace files can be used for diagnosing invalid data or incorrect type definitions. When the MapTrace Switch setting is set to ON, you can specify the location and file name and select to have information captured for inputs and outputs including what level of detail you want recorded.
When you enable the InputContentTrace setting to trace your input data, the log file provides information about the data objects found, why data was found to be invalid, sizes and counts of data objects and their position in the data stream. When OutputTrace is enabled, the information recorded in the trace file reflects which output objects were built and which output objects evaluate to NONE.
You can choose to trace the input data, the output data or both. For additional information about map trace files, see the Map Designer documentation.