As of Release 3.0, you can assign a variable number of partners to notifications and orders.
The possible partner types ( vendor , customer, contact person...) are subdivided into partner functions (ship-to party, sold-to party, bill-to party,...). These are determined by means of a partner determination procedure which depends on the notification or order type.
During notification and order processing, the partner information of the master data is made available by the system. In addition, you can enter further operation-specific partners. In addition to partner addresses, which are provided in the standard system, you can also enter specific addresses for an operation.
Maintain the partner determination procedures for notification types and types.
R/3 Customizing Implementation Guide (Notifications)
R/3 Customizing Implementation Guide (Orders)
Please also see the partner release notes for equipment and functional locations: partner assignment for equipment/functional locations