Business partners willing to do business electronically with each other must reach an agreement (1) on the economic level, (2) on the inter-organizational process choreography, and (3) on the services implementing the choreography. In order to search for a potential business partner, one will first look for a partner who offers a required service on the economic level and who supports a complementary role in a choreography, before binding to its IT services. Inasmuch, a registry for inter-organizational systems should cover all three levels and maintain the dependencies between them. In this paper we set up on well accepted approaches on the different levels, i.e. (1) the e3value ontology, (2) the UN/CEFACT modeling methodology (UMM), and (3) the business process execution language (BPEL). We specify a registry meta model on top of ebRIM registering the artifacts on the different levels and defining their inter-dependencies.