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JCL Considerations

All input and output ddnames must be unique within the same job step. If the target DMCL files do not have unique ddnames, use the INTO option for each output file.

JCL must include DD statements for the output files. If a file is not defined to use dynamic file allocation, then DD statements for the input files are also required.

Note: For more information about the generic JCL used to execute the batch command facility, see the chapter for your operating system in this guide.