way to Manually process message

Hi Friends,

Is there any way,I can process the message that had came in my XI system from partner manually again.

Actualy I am facing some problem in Connecting my XI to my R/3 side and i am succesfully gettin message into my XI from partner, so for this I need to test the message many time,n for every time its nt good idea to tell partner to send message.

SO is there any way I can do it from my side only?

Also is it possible that I can change the Payload of message in sxmb_moni and run the message again?