Receiving on behalf of other in SSP

Summary

What are the options to enable a substitute to receive on behalf of other user who's on holiday?

Content

How have you handled the cases, when the requester is on holiday and receipts should be made on behalf of him/her by a substitute? There is a privilege that enables this ("Create Self-Service All Requisition Receiving Receipt"), but in our case it is not a good option since you cannot restrict it to cover only that person's tasks who is on holiday: with that privilege you can see and receive ALL the POs in the system and that creates an issue in our business environment.