The master data of suppliers and customers is managed in SAP S/4HANA by the business partner master data. The business partner (BP) is a central master data object for all natural and legal persons with whom your company has a business relationship. From a technical point of view, the business partner forms a bracket over suppliers and customers.
- At the business partner level, basic data (number, name, address, bank data, tax number, and so on) is maintained.
- Depending on the assigned business partner roles, the business partner can be used as a supplier and/or as a customer, with corresponding customer and/or supplier master records being created in the background.
Business partner (BP) master data can be maintained with the transaction BP, or by using the corresponding apps from the SAP Fiori launchpad.

Business Partner Category
When a business partner is created, the business partner category must be selected. The business partner category is the term used to classify a business partner as one of the following:
A natural person (for example, a private individual or an employee)
A group (for example, a community of heirs)
An organization (a legal entity or part of a legal entity, such as a company or a department of a company)
The business partner category determines which fields are available for data entry.
The business partner category assignment cannot be changed once the business partner has been created.
Business Partner Role
Business Partner Grouping

The number range of a business partner is determined by a grouping, which needs to be selected when creating a business partner on client level.
To configure groupings, use the following menu path in Customizing: SAP Customizing Implementation Guide → Cross-Application Components → SAP Business Partner → Business Partner → Basic Settings → Number Ranges and Groupings → Define Groupings and Assign Number Ranges.
The assignment of business partners to groupings is stored in table BUT000.
Account Group
A supplier master record is automatically created in the background when you create a business partner master record for a supplier. An account group is assigned automatically to this supplier master record. The account group depends on the grouping and is assigned in table TBC001.
To maintain this table, go to SAP Customizing Implementation Guide → Cross Application Components → Master Data Synchronization → Customer/Vendor Integration → Business Partner Settings → Settings for Vendor Integration → Field Assignment for Vendor Integration → Assign Keys → Define Number Assignment for Direction BP to Vendor.
The Same Numbers checkbox in this Customizing activity decides whether business partner master records and supplier master records have the same numbers. If the checkbox is not selected, the number for the supplier is assigned through the account group.
You can display the assigned account group on the Vendor: General Data tab in the business partner master record for the BP role Supplier.

Field Selection Control
Field selection for business partners can be maintained in Customizing under the following: SAP Customizing Implementation Guide → Cross Application Components → SAP Business Partner → Business Partner → Basic Settings → Field Groupings. The field attributes can be defined on the following levels:
- Client
- BP role
- Activity (create, change, display)
- BP type: The BP type is a field in the business partner master data that you can optionally populate to add flexibility to the field selection control. BP types can be freely defined in Customizing.
If different settings are maintained for the same field, priority rules apply.
The field selection priority rules within business partner roles differs from the standard rules. In the standard logic, HIDE has the highest priority, followed by DISPLAY, MANDATORY, and OPTIONAL.
For business partner roles, MANDATORY (Required Entry) has the highest priority, followed by OPTIONAL, DISPLAY, and HIDE. An example: the field Internet Mail Address (E-Mail) has been set as a required entry (MANDATORY) for business partner role FLVN00 FI Vendor and as a hidden entry (HIDE) for business partner role FLVN01 Supplier. When any supplier is then maintained in the system, the field is a required entry.
Business Partner Relationships
A business partner relationship represents the business connection between two business partners.
To create a relationship between two business partners, you have to assign a business partner relationship category to the business partner relationship. The business partner relationship category describes the characteristics of the business partner relationship.
You can limit a relationship in time by entering the start date and end date of the relationship. This means that it is possible to get an overview of the periods in which certain business partners were contact persons for a company, for example.
ExampleMs. Lopez at ABC Supplier Ltd. is the contact person for your company.
Ms. Lopez is created as a business partner of business partner category Person and with business partner role BUP001 Contact Person.
A relationship is then created with the relationship category is contact person of between business partner Lopez (having the BP category Person), and the business partner ABC Supplier Ltd. having the BP category Organization.
You can assign some attributes (such as a firm’s address for the contact person relationship) to a relationship, which prevents data being stored redundantly.
Note
Make the necessary settings for the relationships in the Implementation Guide (IMG) in Customizing of the Business Partner under Business Partner Relationships.


