The exit routine return code is set to a value 4 each time an exit is called.

There is currently no requirement to return a return and reason code other than the default values of return code 4, reason code 0.

In an effort to enforce coexistence with any future enhancements to post-label processing, the return and reason code will be inspected and if anything other than RC=4, RSN=0 is returned a warning message will be issued.

Return code 4, reason code 0 indicates that the routines takes no vote on the processing to be done for this exit point. As stated before, there is currently no action taken for this exit, but if this changes in the future a return code of 4/reason code of 0 will allow compatible processing.