If you obtain incorrect or unexpected results when running some of your graphs and you want to know what errors occure and where they occure, you must debug the graph. You need to guess where the problem may arise from and, sometimes, you also need to specify what records should be saved to debug files. If you do not process great number of records, you do not need to limit those that should be saved to debug files, however, in case that you parse big numbers of records, this option may be useful.
To debug an edge, you can:
Enable debug. See Enabling Debug.
Select debug data. See Selecting Debug Data,
View debug data. See Viewing Debug Data.
Turn off the debug. See Turning Off Debug.