What is a Dummy Utility and what it does?

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What is a Dummy Utility and what it does?

IEFBR14 is a Dummy utility and it is used for the sake of EXEC PGM = ... statement in JCL [when used it would not perform any task ] e.g. While Allocating a dataset you don't have to run any utility [ this could be done by giving disp = new in DD statement ]. But for a a PGM name must be given in EXEC statement, it is used.

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