Data Security and Multi-Tasking (MT) Partition
In the case that a partition has been started as multi-tasking (MT) partition, then one job will be allowed in a single process step (// EXEC) to read further jobs from the VSE/POWER RDR queue. The passing of a complete RDR queue entry to the job will cause some VSE/POWER end-of-job processing for each entry read. This in turn will cause the process step security authorization to be cancelled when the process step completes and z/VSE® Job Control becomes active again. If it is necessary to reestablish the job's security authorization, this may be done by following the // EXEC statement with a // ID statement.