IB_DECO124 - Serial number &1 is assigned to material &2 but not to material &3

SAP Error Message - Details

• Message type: E = Error

• Message class: IB_DECO - IB: Messages for IBase

• Message number: 124

• Message text: Serial number &1 is assigned to material &2 but not to material &3

What causes this issue?

Serial number &V1& is assigned to material &V2& in installed base
management. The material number you entered (&V3&) deviates from this.

System Response

The system continues to work with material number &V2&.

How to fix this error?

This may happen if the material number for the serial number is changed
in the master data, for example via material transfers or directly.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message IB_DECO124 - Serial number &1 is assigned to material &2 but not to material &3 ?

  The SAP error message IB_DECO124 indicates a conflict with serial number assignment in the system. Specifically, it means that a serial number (denoted as &1) is assigned to one material (denoted as &2) but is being attempted to be used with a different material (denoted as &3). This typically occurs in scenarios involving inventory management, production, or sales where serial numbers are used to track individual items.
  Cause:
  
  Incorrect Serial Number Assignment: The serial number in question is already linked to a different material, which violates the unique assignment rule for serial numbers in SAP.
  Data Entry Error: There may have been a mistake in data entry where the wrong serial number or material number was input.
  System Configuration: The system may not be configured correctly to handle serial numbers for the materials in question.
  Material Master Data Issues: The material master data for the items involved may not be set up correctly, leading to conflicts.
  
  Solution:
  
  
  Verify Serial Number Assignment:
  
  Check the serial number assignment in the system to confirm which material it is currently assigned to. You can do this by using transaction codes like IQ03 (Display Serial Number) to see the details of the serial number.
  
  
  
  Correct the Material Reference:
  
  If the serial number is indeed assigned to the wrong material, you may need to reassign it to the correct material. This can involve unassigning it from the current material and then assigning it to the intended one.
  
  
  
  Review Material Master Data:
  
  Ensure that the material master data for both materials is correctly configured. Check the serial number profile and ensure that both materials are set up to handle serial numbers appropriately.
  
  
  
  Check for Data Entry Errors:
  
  Review the transaction or process that led to the error to ensure that the correct serial number and material numbers were used. Correct any mistakes in the data entry.
  
  
  
  Consult Documentation or Support:
  
  If the issue persists, consult SAP documentation or reach out to your SAP support team for further assistance. They may provide insights specific to your system configuration or any known issues.
  
  
  
  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 how serial number management works in SAP, including the configuration of serial number profiles and the implications of assigning serial numbers to materials.
  SAP Notes: Check for any SAP Notes related to serial number management and error messages for potential bug fixes or updates that may address the issue.
  
  By following these steps, you should be able to resolve the error message IB_DECO124 and ensure proper handling of serial numbers in your SAP system.