3001765 - Process Communication Error in Third Party Purchase Order: Purchase Order cannot process an update sent by an external consumer

You have created third party sales order and purchase order documents and in purchase order document flow, there is a process communication error:

"Purchase Order cannot process an update sent by an external consumer".

The main error in Application and User Management - Process Communication Errors is  "PO Kit Item ID not found in acknowledgment".(PO refers to purchase order)

SAP Business ByDesign

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