This document discusses the steps required for creating customer master data in SAP, which includes: 1) Defining account groups using transaction code OBD2 to set up general, company code, and sales data tables. 2) Creating number ranges using transaction code XDN1 to define number ranges for the account groups. 3) Assigning the number ranges to the account groups using transaction code OBAR. It also discusses setting up partner determination procedures using transaction code VOPA to define sold-to, ship-to, bill-to, and payer partners, and configuring these procedures for the customer master data.