How To Fix IO126 - Product & is already in the object list

SAP Error Message - Details

• Message type: E = Error

• Message class: IO - Plant Maintenance: Object List

• Message number: 126

• Message text: Product & is already in the object list

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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Smart SAP Assistant

• What is the cause and solution for SAP error message IO126 - Product & is already in the object list ?

  The SAP error message IO126, which states "Product & is already in the object list," typically occurs in the context of Integrated Planning or when working with product master data in SAP. This error indicates that the product you are trying to add or process is already included in the list of objects being handled in the current transaction or operation.
  Cause:
  
  Duplicate Entry: The most common cause of this error is that the product you are trying to add has already been included in the list of products for the current planning run or transaction.
  Session State: Sometimes, the session may not have been refreshed properly, leading to stale data being processed.
  Incorrect Logic in Custom Code: If there are custom enhancements or user exits, they might be incorrectly handling the product list.
  
  Solution:
  
  Check the Object List: Review the list of products you are working with to confirm if the product in question is already present. If it is, you may not need to add it again.
  Clear the List: If you are sure that the product should not be in the list, try clearing the list and re-adding the products.
  Refresh the Session: Log out and log back into the SAP system to refresh the session state. This can help clear any temporary issues.
  Debugging: If you have access to the development environment, you can debug the transaction to see where the product is being added to the list and why it is being flagged as a duplicate.
  Consult Documentation: Check SAP documentation or notes related to the specific transaction or module you are working with for any known issues or additional guidance.
  
  Related Information:
  
  Transaction Codes: Depending on the context, you might be using transaction codes like /SAPAPO/SDP94 for planning or /SAPAPO/MC90 for product master data.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that might address this specific error or provide patches.
  User Forums: Consider checking SAP community forums or user groups for similar issues and solutions shared by other users.
  
  If the problem persists after trying the above solutions, it may be beneficial to reach out to your SAP support team or consult with an SAP expert for further assistance.