ESH_COCKPIT-->Connect to backend system Issue

Hello,

We're trying to connect our Gateway system to the backend ECC system via ESH_COCKPIT.

However, when we use ESH_COCKPIT on the Gateway system, we see the error below after logging in:

Image may be NSFW.
Clik here to view.

We've applied all possible Notes.

If we try to delete the backend connection, it says system not available even though the backend system is up & running.

If we try to Update Runtime data for the backend system, it works well...

Please advise how we could go about addressing the RFC error.

We're on 7.40 SP 7.

Thanks a lot.

saba.