thanks for your help i found these info helpul and i solved the problem ,
BUT I HAVE another one with replicating business partners from CRM to ERP as i can't find the Bupa_main publication to subscribe it in the CRM Site ??
and do i need to link the CRM site in the adminstraion console with RFC or leave as NONE ?
and if i did how i can changed back to NONE ??
many question but i appreciate your support
thanks