ANIRBAN,
I stopped the CC RFC Sender, but gave the same error, because the error occurs before calling the CC RFC Sender.
So I put a progam different ID in SM59 that is not registered in the JCo and he returned the error below:
"Transaction program not registered"
Then it is correctly recognizing the ID Program.
One thing I noticed is that the error is intermittent, because there are times that works perfectly, correctly returns the search on SOAP, just need to do 15 attempts to run. without changing anything.