A PowerExchange utility that you can use to define a marker in the IMS logs for use by the IMS log-based ECCR. When the ECCR encounters a marker, a PowerExchange Logger message is issued that specifies restart tokens for the affected registration tags. You can use these tokens as input to the DTLUAPPL utility to define a start point for extraction processing. The DTLCUIML utility runs as an IMS Batch Message Processing (BMP) job. also called the IMS Log Marker Utility.