The book describes the concept of using the SAP function "Business Partner". It will integrate the Business Partner in the SAP S / 4HANA, ERP, ECC and MDG architecture. The presentation of the customizing steps takes place on the basis of examples. This essay gives an overview of the introduction of the SAP Business Partner concept. When implementing MDG and S / 4HANA, the implementation of SAP Business Partner is a "MUST".Organization (firm, branch office), person or a group of persons or organizations in which your company has a business interest. You can create and manage your business partners centrally for different business transactions. This is of prime interest if a business partner plays different roles for a company, such as sold-to party and ship-to party.You can create a business partner in different business partner roles. During the course of the business relationship, the business partner can assume other business partner roles. You do not need to create the general data, which is independent of a business partner's function or of application-specific extensions, again in each case for this business partner. This prevents data being created and stored redundantly.