How To Fix WG122 - Deletion of PO quantity only allowed for additional items

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 122

• Message text: Deletion of PO quantity only allowed for additional items

Self-Explanatory Message

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• What is the cause and solution for SAP error message WG122 - Deletion of PO quantity only allowed for additional items ?

  Certainly! Here's a detailed explanation for the SAP error message WG122: "Deletion of PO quantity only allowed for additional items":
  
  Error Message: WG122
  Text: Deletion of PO quantity only allowed for additional items
  
  Cause:
  This error occurs when you try to reduce or delete the quantity of a Purchase Order (PO) item that is not an additional item. In SAP MM (Materials Management), additional items are those added to a PO after the initial creation, often for services or other non-stock items, and their quantities can be adjusted or deleted more flexibly.
  For standard PO items (originally created items), SAP restricts the deletion or reduction of quantities directly because these items are usually linked to other processes such as goods receipts, invoices, or contracts. The system enforces this to maintain data consistency and integrity.
  
  When does this happen?
  
  When you try to delete or reduce the quantity of a PO item that is part of the original PO and not marked as an additional item.
  When the PO item has already been partially or fully processed (e.g., goods receipt posted).
  When the item is a stock item or service item that is not flagged as additional.
  
  
  Solution:
  
  
  Check if the item is an additional item:
  
  Additional items are usually service items or items added after the initial PO creation.
  Only these items allow quantity deletion or reduction without further restrictions.
  
  
  
  If you want to delete or reduce quantity of a standard PO item:
  
  You cannot directly delete the quantity if the item is already processed.
  Instead, you should:
  
  Create a PO change document to reduce the quantity, if allowed.
  If goods receipts or invoices are already posted, you may need to reverse those first.
  If the item is no longer needed, consider closing the item or setting the quantity to zero if the system allows.
  Alternatively, create a credit memo or cancellation document for the related goods or invoice documents.
  
  
  
  
  
  For additional items:
  
  You can delete or reduce the quantity directly in the PO change transaction (ME22N).
  
  
  
  Check for related documents:
  
  If the PO item has related goods receipts or invoices, you may need to reverse or cancel those before changing the PO quantity.
  
  
  
  
  Additional Information:
  
  
  Transaction codes involved:
  
  ME21N: Create Purchase Order
  ME22N: Change Purchase Order
  MIGO: Goods Movement (for goods receipt reversal)
  MIRO: Invoice Verification (for invoice cancellation)
  
  
  
  SAP Notes and Documentation:
  
  SAP Note related to WG122 may provide specific instructions depending on your SAP version.
  Refer to SAP Help Portal for Purchase Order item management and restrictions.
  
  
  
  Business Process Considerations:
  
  Always ensure that changes to PO quantities comply with your organization's procurement and inventory policies.
  Coordinate with finance and warehouse teams before making changes that affect goods receipts or invoices.
  
  
  
  
  Summary:
  
  
  
  Aspect
  Explanation
  
  
  
  
  Cause
  Attempt to delete/reduce quantity of a PO item that is not an additional item.
  
  
  Solution
  Only additional items allow quantity deletion; for standard items, reverse related documents or close the item.
  
  
  Related Info
  Check goods receipts/invoices, use ME22N for changes, coordinate with related departments.
  
  
  
  
  If you need help with a specific scenario or transaction, feel free to provide more details!