With the changeover to S/4HANA, the use of SAP Business Partner becomes mandatory. In a brownfield approach, the conversion of accounts payable and accounts receivable to Business Partner is therefore mandatory either as part of the S/4 project or already as a preliminary project in the ECC system. The use of the Business Partner in S/4HANA also brings some innovations and advantages. Face the challenges of a Business Partner conversion and thus create more efficiency for your accounts receivable and accounts payable in the long term.