3718235 - Substitutes unable to Post Goods Receipt for Purchase Requisitions in "Confirm Receipt of Goods - New" app

A user creates a Purchase Requisition (PR) before their absence. A substitute is maintained in My Inbox or Workflow Administration for that user’s approvals. However, when the substitute logs in and uses the Confirm Receipt of Goods – New app with “Confirm on Behalf” checked, the PR is not visible or accessible for goods receipt posting.

SAP S/4HANA Cloud Public Edition

1. Create a purchase requisition and purchase order as a user.
2. Set a planned substitution rule for the user via "Workflow Administration."
3. Log off and re-enter the system as the substitute user.
4. Attempt to confirm goods receipt for the purchase requisition in the "Confirm Receipt of Goods - New" app using the "Confirm on Behalf" checkbox.

Substitution maintained in My Inbox or Workflow Administration only applies to workflow tasks such as approvals and does not extend to self-service transactional apps like Confirm Receipt of Goods – New or My Purchase Requisitions.

The BAdI MM_PUR_SSP_PR_GET_CONF_OB_USR cannot be used to extend workflow substitution to transactional responsibilities because:

• The apps check document ownership and authorization based on the original creator or business role
• Workflow substitution does not change document ownership or authorization context
• Standard SAP Cloud design deliberately separates workflow substitution and transactional access

This is a system behaviour. SAP S/4HANA Cloud Public Edition does not support using My Inbox substitution to grant transactional access for goods receipt posting on behalf of another user. 

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