We are testing out the possibilities of upgrading/migrating from xMII 11.5 to MII 12.2
We are currently running a test MII 220.127.116.11 on NW 7.3 PLAIN/UNPATCHED.
We would like to eliminate known & solved NW 7.3 errors as the cause of our MII 18.104.22.168 errors so we would like to update NW 7.3 to the latest level before concluding on evaluation of MII 12.2.
But our (external) SAP Basis Consultant says that updating NW with support stacks is almost impossible without "Solution Manager" which is an external SAP buyware product.
Is that really right?
We are basically interested in upgrading our MII installation (which we paid support mainteance for all the years), not in buying a lot of extra expensive SAP systems (Solution manager, PCO, NWDI etc.) in the progress.
SAP prommised us all the years that the upgrade was free if we paid maintenance...
So was that promise right?
How do we update NW 7.3 without buying stuff? Is that "just do it" or practically impossible?
Thank you very much in advance!