How To Fix IO121 - Functional location &1 assembly &2 already contained in object list

SAP Error Message - Details

• Message type: E = Error

• Message class: IO - Plant Maintenance: Object List

• Message number: 121

• Message text: Functional location &1 assembly &2 already contained in object list

What causes this issue?

You have tried to enter a <DS:GLOS.functional_location>functional
location</> and an <DS:GLOS.assembly>assembly</> in the
<DS:GLOS.object_list>object list</> which are already contained in the
object list.

System Response

INCLUDE KEINE-FUNKTION OBJECT DOKU ID TX LANGUAGE EN

How to fix this error?

Delete the entries from the object list.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message IO121 - Functional location &1 assembly &2 already contained in object list ?

  The SAP error message IO121 indicates that a functional location (FL) and an assembly (or component) are already included in the object list for a particular operation or transaction. This typically occurs in the context of maintenance orders, work orders, or similar processes where you are trying to add a functional location or assembly that has already been included in the list.
  Cause:
  
  Duplicate Entry: The most common cause of this error is that the functional location and assembly you are trying to add have already been added to the object list of the order or operation.
  System Configuration: There may be specific configurations or settings in the SAP system that prevent duplicate entries in certain transactions.
  User Error: The user may not be aware that the functional location or assembly is already part of the list, leading to an attempt to add it again.
  
  Solution:
  
  Check Object List: Review the object list of the order or operation to confirm whether the functional location and assembly are already included. You can do this by navigating to the relevant order or transaction and checking the details.
  Remove Duplicate: If you find that the functional location and assembly are already present, you do not need to add them again. If you need to make changes, consider removing the existing entry and then adding the new one if necessary.
  Consult Documentation: If you are unsure about the process, refer to SAP documentation or user manuals related to the specific transaction you are working with.
  User Training: Ensure that users are trained on how to manage object lists effectively to avoid duplicate entries in the future.
  System Configuration Review: If this error occurs frequently and is causing issues, it may be worth reviewing the system configuration with your SAP Basis or functional team to ensure that it aligns with your business processes.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as IW31 (Create Order), IW32 (Change Order), and IW33 (Display Order) to manage work orders effectively.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Support: If the issue persists and you cannot resolve it, consider reaching out to your SAP support team or consulting with SAP experts for further assistance.
  
  By following these steps, you should be able to address the IO121 error effectively.