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