Service mappings are used to integrate Order Management with other Oracle applications by mapping attributes from a sales order to a purchase order. Service mappings enable you to pass order information from a sales order to a purchase order document, such as supplier, item, quantity, price, and so on. To use service mappings, you need three supply chain modules: Supply Chain Orchestration Cloud, Procurement Cloud, and Order Management Cloud. Supply Chain Orchestration Cloud is the module that creates and manages the purchase order document based on the sales order information. Procurement Cloud is the module that provides the functionality to manage suppliers, purchase agreements, and requisitions. Order Management Cloud is the module that captures and fulfills the sales order.
Reference:
Use a Service Mapping to Integrate Order Management with Other Oracle Applications Overview of Order Management
[Overview of Supply Chain Orchestration]
[Overview of Procurement]