I am having a very hard time figuring out how I should configire my product systems, instances so I can successfully upgrade my newly installed ERP6/EHP4 system from SP3 to SP12. Whatever I do, MOPZ thinks that I am trying to upgrade from a plain ERP6 system to EHP4/SP12 and then later SUM rejects the stack saying that some of the components don't match!? Anybody out there that mastered this? I would be greatly thankful if you could share your experience and let's celebrate your success :-)
Thanks,
Wolfgang