IEFBR14 - IBM Mainframe

This program is a null program, - it name is derived from an assembler language instruction that is used to exit a procedure or program, and this exactly what it does. It executes a single statement, which specifies the end of the program. This program is used to code functions that are commonly available on the DD statement, such as the creation, deletion, and updating of data sets, without having to execute any explicit program. Since this program does nothing it can be used to check the syntax of your JCL without affecting any data sets.

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