Hi Wathiq:
The Ariba Network support team should be able to provide guidance. You can contact the team for Europe, Middle East and Africa at +44 (0) 20 7187 4185 or +31 (0)20 797 9060. There is also a link for Help in the top right corner of seller.ariba.com.
Debbie Curtis-Magley
Ariba Exchange Community Manager