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z/OS MVS JCL Reference
Use the PARMDD parameter in conjunction with a DD statement to pass variable information to the processing program executed by this job step. To use the information, the processing program must contain instructions to retrieve the information.
Specifying the PARMDD keyword causes the job to be scheduled on systems that are at or above the z/OS 2.1 level.
The DD statement can be a SYSIN DD (a DD coded as DD * or DD DATA) or it can reference a data set, UNIX System Service file or DD statement in a previous step (via DSN=*.stepname.ddname).
The PARMDD keyword is mutually exclusive with the PARM keyword.
For details on the format of the passed information and its retrieval, see z/OS MVS Programming: Assembler Services Guide.
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