z/OS MVS JCL Reference
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Relationship to other statements

z/OS MVS JCL Reference

A PATH parameter other than /dev/null on a DD statement that overrides a procedure statement nullifies the DUMMY parameter on the overridden statement.

Backward and forward references to a DD statement containing a PATH parameter are not permitted. For backward references, the referring DD statement is treated as an error. For forward references, the DD statement referred to is treated as an error.

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