The goal is to enable system to split products to defined supply partners so that approval and fulfillment of some products can be handled by those partners. This epic does not include splitting the requisition, this work is in OLMIS-5642.
All suppliers, the "main" one and the supply partners, combined would approve and fulfill the entire requisition.
A supplier does not supply products that have been supplied by another partner, so no partial approval/fulfillment of products by a supplier.
Any product not handled by a supply partner would be handled by the "main" supplier.