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Inter-User Communications Vehicle (IUCV) Functions

Return Codes

The library also interfaces with IUCV and CMS in providing return codes. The return codes operate as follows:

A negative return code indicates that the library could not invoke a CMS IUCV function.
Library functions that successfully invoke CMS IUCV return the CMS return code. (CMS uses 0 to indicate success.)
Library functions that invoke IUCV macro instructions directly return the condition code set by IUCV.

For a complete list and explanation of IUCV function return codes, refer to the VM/SP System Programmer's Guide appropriate for your release.

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