How to test and run 2 Endevor versions concurrently, when upgrading
All supported Releases
Concurrent Release Considerations
In many cases, it is necessary to run two different releases of Endevor at the same time.
To do this,
Remeber - Both releases can not be run in the same TSO/ISPF session.
After working with one release, before working with the other, log off TSO and log on again, making sure to change the logon procedures.
When using the same logon procedures, a message indicates an incompatible C1DEFLTS Table.
ISP Command Table Considerations
Endevor uses an ISP Command table (allocated under the ISPTLIB DD) for some commands (such as ESORT, EONLY, EPRINT, ACMQ, BC1PACMI, EMSGS, and so on).
However, unless this facility is specifically enabled, it may be prevented from working by your site's security package. For example, ACF2 has a facility named TSO Command Limiting, which may need modification.
It is strongly recommended that you test using your own data. For more information on how to do this please review the link below:
Testing New Releases with Your Data