If you are getting an error like “Permanent error in BPE inbound processing” for your RFC queue then you can check your queue with tcode SM58 and solve the issue.
For an example issue on SAP PI system like below ;
Goto –> SM58
You can see the queue with stuck situation like below , double click the first line
You should see the following screen and pelase double click it again
Now you should see the reason why the queue is stuck
Select the erroneous line and goto menu Edit –> Execute LUW
Refresh the screen and probably starts to process otherwise you should check the detail of the problem on this screen.
After some time period you can see the clear queue status like below screen.