apparently there is some transaction in CRM called crmm_bupa_map where you can enter in an erp customer number and "gather information". Unfortunatly my bdoc goes in error in the outbound queue in CRM already saying "Filter criteria invalid. See SAP Note 0419752".
My idea was to build a remote enabled function module around the submit or call transaction of this but the stuff does not seem to work like it should. Anyone an idea?