If you obtain incorrect or unexpected results when running some of your graphs and you want to know what errors occur and where, you can 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 are not processing large numbers of records, you should not need to limit the number that should be saved to debug files, however, in case you are processing large 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.