How To Fix IO124 - Serial number &1 and material number &2 are already in the object list

SAP Error Message - Details

• Message type: E = Error

• Message class: IO - Plant Maintenance: Object List

• Message number: 124

• Message text: Serial number &1 and material number &2 are already in the object list

What causes this issue?

You have tried to enter a <DS:GLOS.serial_number>serial number</> and a
<DS:GLOS.material_number>material number</> 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 entry.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message IO124 - Serial number &1 and material number &2 are already in the object list ?

  The SAP error message IO124 indicates that there is a conflict with the serial number and material number combination you are trying to process. Specifically, it means that the serial number you are attempting to use is already associated with another object in the system. This can occur in various transactions, such as when trying to post goods movements, create equipment, or perform inventory management tasks.
  Cause:
  
  Duplicate Serial Number: The serial number you are trying to use is already assigned to another material or object in the system.
  Incorrect Object List: The system may have an object list that already contains the serial number and material number combination you are trying to enter.
  Transaction Context: The error may arise in specific transactions where unique serial numbers are required, and the system detects a conflict.
  
  Solution:
  
  Check Existing Assignments: Verify if the serial number is already assigned to another material or object. You can do this by using transaction codes like IQ03 (Display Serial Number) to see the details of the serial number.
  Use a Different Serial Number: If the serial number is indeed in use, consider using a different serial number that is not currently assigned to any other object.
  Review Object List: If you are working with an object list, ensure that the serial number and material number combination you are trying to add is not already present in that list.
  Clear Object List: If applicable, clear the object list and re-enter the necessary data to ensure there are no duplicates.
  Consult Documentation: Review SAP documentation or help files related to the specific transaction you are using to understand the requirements for serial number management.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as IQ01 (Create Serial Number), IQ02 (Change Serial Number), and IQ03 (Display Serial Number).
  Serial Number Management: Understand the configuration settings for serial number management in your SAP system, which can be found in the Material Management (MM) or Plant Maintenance (PM) modules.
  User Authorizations: Ensure that you have the necessary authorizations to view and manage serial numbers in the system.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues or bugs related to serial number handling in your version of SAP.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in the relevant module.