Hi folks,
I have a question about the connectivity between our 3 tiers, development, testing and production/live, when running remote comparisons.
We run se24, select am object, then utilities->versions -> version management -> public section. This brings me to the versions of the objects in the system.
Then we click remote comparison, and the option for entering a target system or an RFC equivalent for a target system. This is where we run into difficulty. When in my development system, it does not recognize the testing or production/live target system. Yet, when running this on testing or production/live, it recognizes the remote target system (either production/live, testing or development).
As a workaround, I have implemented trusted RFC connections from development to the other systems, so it does currently work. However, the underlying cause remains a mystery, which I don't like...! This previously worked before out SAP ECC system was upgraded... The connections and configuration of TMS all seem correct to me... Does anyone have any ideas or suggestions?
I hope my explanation is clear! 
Thanks,
Michael