How To Fix WG309 - PO created for supplier/plant &1 &2, simulation cannot be deleted

SAP Error Message - Details

• Message type: E = Error

• Message class: WG - Messages for store order and investment buy

• Message number: 309

• Message text: PO created for supplier/plant &1 &2, simulation cannot be deleted

What causes this issue?

You tried to delete an entry for which a purchase order already exists.

System Response

You cannot delete the simulation entry.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WG309 - PO created for supplier/plant &1 &2, simulation cannot be deleted ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WG309 - PO created for supplier/plant &1 &2, simulation cannot be deleted
  
  Meaning / Cause:
  This error occurs when you try to delete a purchase requisition (PR) simulation or a purchase requisition item that has already been converted into a purchase order (PO) for the specified supplier (&1) and plant (&2). 
  In SAP MM, once a purchase requisition has been converted into a purchase order, the system prevents deletion of the original simulation or requisition item to maintain data consistency and avoid inconsistencies in procurement documents.
  
  Cause Details:
  
  The purchase requisition simulation or item is linked to an existing purchase order.
  The system enforces integrity by not allowing deletion of requisition data that has already been used to create a PO.
  This is a standard SAP control to prevent orphaned or inconsistent procurement data.
  
  
  Solution / How to Resolve:
  
  
  Check if PO exists:
  
  Verify if a purchase order has been created for the supplier and plant mentioned in the error.
  Use transaction ME23N (Display Purchase Order) or ME22N (Change Purchase Order) to check the PO.
  
  
  
  Do not delete the simulation:
  
  Since the PO exists, you cannot delete the simulation or requisition item.
  Instead, if changes are needed, modify the PO directly or create a new requisition.
  
  
  
  If deletion is necessary:
  
  You must first delete or cancel the purchase order that was created from the requisition simulation.
  After the PO is deleted or canceled, you can delete the simulation or requisition item.
  Note: Deleting a PO requires appropriate authorization and business approval.
  
  
  
  Alternative approach:
  
  If the PO is still valid, consider creating a new requisition or modifying the existing PO rather than deleting the simulation.
  
  
  
  
  Additional Information:
  
  This message is part of SAP's standard checks in the Materials Management (MM) module.
  The message helps maintain procurement document integrity.
  The message text can be found in message class WG.
  The placeholders &1 and &2 represent the supplier and plant respectively.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Error Message
  WG309 - PO created for supplier/plant &1 &2, simulation cannot be deleted
  
  
  Cause
  Purchase order already created from the requisition simulation for the supplier/plant.
  
  
  Effect
  System prevents deletion of the requisition simulation to maintain data consistency.
  
  
  Solution
  Delete or cancel the PO first, or modify the PO instead of deleting the simulation.
  
  
  Transaction
  ME23N (Display PO), ME22N (Change PO), ME52N (Change PR), ME53N (Display PR)
  
  
  
  
  If you need help with specific steps to delete or cancel the PO or modify the requisition, please let me know!