How To Fix 64728 - This purchase is already assigned to a sale

64728 - Overview

• Message type: E = Error

• Message class: 64 - Treasury Management: Securities

• Message number: 728

• Message text: This purchase is already assigned to a sale

What causes this issue?

You cannot reverse or delete this transaction as long as a sale is
still assigned to this purchase.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

You must first reverse or delete all sales which are assigned to this
purchase.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 64728 - This purchase is already assigned to a sale ?

  The SAP error message 64728, which states "This purchase is already assigned to a sale," typically occurs in the context of sales and distribution (SD) or materials management (MM) when there is an attempt to assign a purchase order or a purchase requisition to a sales order that has already been linked to another sales order.
  
  Cause:
  
  Duplicate Assignment: The primary cause of this error is that the purchase order or requisition you are trying to assign is already linked to a different sales order. SAP does not allow the same purchase document to be assigned to multiple sales orders simultaneously.
  Incorrect Document Flow: There may be an issue with the document flow where the system is not recognizing the correct assignment due to previous transactions or changes in the document status.
  
  Configuration Issues: There could be configuration settings in the system that restrict the assignment of purchase orders to sales orders in certain