User Exits

CA XCOM Data Transport user exits allow users to modify characteristics and capabilities of CA XCOM Data Transport software by inserting their own routines at various positions, which are known as exit points, in the source code. This appendix provides information about all currently available user exits.

Important! Assemble and link all user exits as reentrant and reusable so that they can be called from base CA XCOM Data Transport which runs as reentrant and reusable.

The information that is provided about each user exit includes:

Purpose
Module name and entry point
Method of enabling the user exit
Name of the CA XCOM Data Transport module from which the user‑supplied module is called
Method of entry (implying the relationship between the two modules)
Name of the required DSECT
Addressing mode at entry
Information about entry registers
Information about exit registers
Return codes
Location of a sample program

Use CAI.CBXGJCL(ASM#TBLS) to assemble and link user exits.

Important! If you are upgrading to a new release, reassemble and link edit your user exit programs.

This section contains the following topics: