ERP systems contain the business-critical information of companies and public agencies. In practice, organisational data is distributed across multiple information systems, making it difficult to gain a comprehensive and consistent view of the available information. Enterprise Knowledge Graph (EKG) and Social Network of Business Objects (SoNBO) are new integration approaches in the field of computer science that are aiming to connect distributed ERP objects by means of a graph structure with the help of an ontology. The successful implementation of an EKG or a SoNBO requires a suitable method for the identification of business objects in the distributed Enterprise Systems. This paper describes and illustrates the necessary process steps to design a Social Network of Business Objects for a heterogeneous business software environment. The method was developed in a Design Science Research project in which a prototype of a SoNBO application was developed, configured and evaluated.