CICS VSAM Transparency for z/OS, Version 1.2


Rules for using automated mapping

You can use the automated mapping facility in the following circumstances: Data sets that do not conform to these rules must be mapped using the manual mapping method.

Start of change An error message is issued and the mapping is terminated if the total number of columns exceeds the DB2® limit of 750. You must reduce the total number of copybook fields to less than 750 by combining or removing fields. This situation can occur if you have repeating group fields. End of change

Automated mapping is also terminated if the copybook length exceeds the VSAM record length. An appropriate error message is issued.

Note: It is impossible for the automated mapping facility to process every conceivable copybook. You should consider editing complex copybooks before trying to process them with the automated mapping facility.




Last updated: May 25, 2012 20:44:14