How To Fix WG126 - Change and reverse not possible at same time! Item: &1

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 126

• Message text: Change and reverse not possible at same time! Item: &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WG126 - Change and reverse not possible at same time! Item: &1 ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WG126 - Change and reverse not possible at same time! Item: &1
  
  Cause:
  This error occurs when you attempt to perform a change and a reversal on the same goods movement item simultaneously in a Goods Movement document (e.g., material document, transfer posting, goods issue, or goods receipt). SAP does not allow changing an item and reversing it at the same time because these are conflicting operations:
  
  Change means modifying the details of the goods movement item.
  Reverse means canceling or undoing the goods movement.
  
  Trying to do both in one step or transaction leads to this error.
  
  When does it typically occur?
  
  During the processing of material documents in transactions like MB02 (Change Material Document) or when using BAPIs or custom programs that try to change and reverse the same item simultaneously.
  When attempting to reverse a goods movement item that is also being changed in the same operation.
  
  
  Solution:
  
  
  Separate the operations:
  
  First, reverse the goods movement item completely.
  Then, if needed, create a new goods movement with the corrected data.
  
  
  
  Check your process or program logic:
  
  Ensure that your custom code or user actions do not try to change and reverse the same item in one step.
  If using BAPIs or IDocs, split the reversal and change into separate calls.
  
  
  
  Use standard SAP transactions properly:
  
  Use MBST to reverse a material document.
  Use MB02 to change a material document (only if reversal is not needed).
  
  
  
  Verify document status:
  
  Make sure the document/item is not already reversed or locked for changes.
  
  
  
  
  Related Information:
  
  Transaction Codes:
  
  MB02 - Change Material Document
  MBST - Cancel Material Document (Reversal)
  MB1A/MB1B/MB1C - Goods Movements
  
  
  SAP Notes:
  
  Check SAP Notes related to WG126 for any patches or updates.
  
  
  BAPI:
  
  When using BAPI_GOODSMVT_CANCEL or BAPI_GOODSMVT_CHANGE, do not combine reversal and change in one call.
  
  
  User Authorization:
  
  Ensure the user has proper authorization to reverse or change goods movements.
  
  
  
  
  Summary:
  Error WG126 means you cannot change and reverse the same goods movement item simultaneously. To fix it, perform reversal and change as separate steps.
  
  If you need help with a specific transaction or custom program causing this error, please provide more details!