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

SAP Error Message - Details

• 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 scenarios.
  
  Solution:
  
  Check Existing Assignments: Review the existing assignments of the purchase order or requisition. You can do this by checking the document flow in the sales order or the purchase order to see where it is currently assigned.
  Reassign or Unassign: If the purchase order is incorrectly assigned to another sales order, you may need to unassign it from that sales order before you can assign it to the desired one. This can typically be done in the sales order or purchase order transaction.
  Create a New Purchase Order: If the purchase order must remain assigned to the original sales order, consider creating a new purchase order for the new sales order instead.
  Consult with Your SAP Administrator: If you are unsure about the assignments or if the issue persists, consult with your SAP administrator or support team. They can provide insights into the document flow and any configuration settings that may be affecting the assignment process.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as ME23N (Display Purchase Order), VA03 (Display Sales Order), and ME51N (Create Purchase Requisition) to navigate through the documents.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Review SAP documentation or user manuals related to sales and distribution and materials management for more detailed information on document assignments and workflows.
  
  By following these steps, you should be able to resolve the error message 64728 and successfully manage your purchase and sales order assignments in SAP.