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In PowerExchange 10.4.0, if you run the DTLURDMO or DTLUCBRG utilities on z/OS, specify a REGION size of at least 64M.
Changes to the architecture of these utilities require additional memory to process the utility functions. If you have existing DTLUCBRG or DTLURDMO jobs, make sure the REGION size is set to 64M or larger before you run the jobs.