3779317 - Supplier assigned to project demand is not carried over as source of supply in purchase requisition

After the conversion of a project demand into a purchase requisition, the supplier assigned to the demand in the "Manage Project Demand" app is not carried over as the source of supply in the purchase requisition item.

SAP S/4HANA Cloud Public Edition

1. Create a demand in "Manage Project Demand" app, assign a supplier to the demand, and request the demand
2. Open the app "Manage Project Procurement" app and navigate to the relevant PR item 
3. Add the Supplier column, and observe that the supplier assigned in the project demand is displayed 
4. Open the same PR item in "Manage Purchase Requisitions" app and notice that the Source of Supply tab is empty
5. Open the same PR item in "Process Purchase Requisitions" app, and notice that the Assign Source of Supply button is available

When a project demand includes a supplier and is converted to a purchase requisition, the supplier is transferred as the Desired Supplier only. It is not an Assigned Source of Supply by design.

Assign the Source of Supply explicitly in the Purchase Requisition. 

manage project procurement, project demand, supplier, desired supplier, source of supply, purchase requisition, purchase requisition item, manage purchase requisitions, process purchase requisitions, supplier not assigned, assigned, procurement, carryover supplier, assign source of supply , KBA , PPM-SCL-DMN , Project Demand (Public Cloud) , MM-FIO-PUR-REQ-SOC , Fiori UI for Sourcing Purchase Requisitions , Problem