which tcode to view XML?

Hello,

From CRM (SAP CRM ABAP 6.0) I am exchanging information with a third party system using web services. Is there any tcode or report where I can view the XML message coming in to CRM?

I know in my call program that response is coming back. (And I checked SXMB_MONI but there is no PI involvement here) but I wish to see the exact XML message.

Your help will be appreciated.

Cheers.