Your client has a requirement to assign new purchasing requests to existing purchase orders.

Oracle Order Management, C. Oracle Planning, E. Oracle Inventory Management, and F. Oracle Demand Management

These are the four Oracle applications that support the feature of assigning new purchasing requests to existing purchase orders. This feature enables Supply Chain Orchestration (SCO) to add a new requisition line to an open purchase order, instead of creating a new purchase order, when fulfilling a supply request from a source system.This can reduce the number of purchase orders and improve the efficiency of the procurement process1. The source systems that can generate supply requests for this feature are:

Oracle Order Management: This is a service that manages the order-to-cash process, from order entry to fulfillment.You can use Order Management to create sales orders for items that are sourced from suppliers, such as drop ship or back-to-back orders2. These orders generate supply requests that are sent to SCO for fulfillment.

Oracle Planning: This is a service that provides various planning methods to optimize the supply and demand balance, such as min-max planning, reorder point planning, or supply planning3. You can use Planning to create planning recommendations for items that need to be replenished from suppliers, such as purchase requisitions or planned orders. These recommendations generate supply requests that are sent to SCO for fulfillment.

Oracle Inventory Management: This is a service that manages the flow of material within and across warehouses. You can use Inventory Management to create internal material transfers for items that need to be moved between warehouses, such as transfer orders or interorganization transfers. These transfers generate supply requests that are sent to SCO for fulfillment.

Oracle Demand Management: This is a service that forecasts the demand for products or services based on historical data, market trends, and customer behavior. You can use Demand Management to create demand plans for items that need to be procured from suppliers, such as purchase requisitions or planned orders. These plans generate supply requests that are sent to SCO for fulfillment.

References:

Assign New Purchasing Requests to Existing Purchase Orders

How Order-to-Cash Works in Order Management

Overview of Planning

[Create Planning Recommendations]

[Overview of Inventory Management]

[Overview of Demand Management]