I would like to know if there's a way or some query to see the Change Documents out of a given Business Partner using SAP or SAP Webdynpro GUI. I've googled but tables such as CDHDR or CDPOS are not working for me. Any other thoughts?
You should check and enable (if they were disabled) the change document object BUPA_BUP in SCDO transaction, with the following values
Check this mini-guide: http://abapcadabra.com/index.php/cookies/541-change-documents