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IBM Mainframe JCL and SORT Utility

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Which statement(s) is/are true for LRECL

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A
LRECL must not exceed BLKSIZE minus 4 for RECFM=V
B
LRECL=nnnnnK syntax is valid.
💡 Explanation:

For Variable (V) records, the LRECL must include the 4-byte Record Descriptor Word (RDW), so it cannot exceed BLKSIZE minus 4. The 'K' syntax (e.g., 32K) is also valid in certain JCL contexts for large block sizes.

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