How To Fix /SCWM/SERIAL129 - Unique item identifier &1 is already assigned to another serial number

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCWM/SERIAL -

• Message number: 129

• Message text: Unique item identifier &1 is already assigned to another serial number

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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message /SCWM/SERIAL129 - Unique item identifier &1 is already assigned to another serial number ?

  The SAP error message /SCWM/SERIAL129 indicates that a unique item identifier (serial number) is already assigned to another serial number in the system. This typically occurs in the context of warehouse management and inventory control, particularly when dealing with serialized items.
  Cause:
  
  Duplicate Serial Number Assignment: The most common cause of this error is an attempt to assign a serial number that is already linked to another item or has been previously used in the system.
  Data Entry Errors: Manual entry errors can lead to the same serial number being entered multiple times.
  System Configuration Issues: There may be issues with the configuration of the serial number management in the SAP system, leading to conflicts.
  Inconsistent Data: Data inconsistencies between different modules or systems (e.g., between SAP and an external system) can also lead to this error.
  
  Solution:
  
  Check Serial Number Assignment: Verify the serial number in question to see where it is currently assigned. You can do this by using transaction codes like IQ03 (Display Serial Number) to check the status of the serial number.
  Correct the Assignment: If the serial number is indeed assigned to another item, you will need to either:
  
  Use a different serial number for the current item.
  Unassign the serial number from the other item if it is no longer needed.
  
  
  Review Data Entry Procedures: Ensure that data entry procedures are followed correctly to avoid duplicate entries. Implement validation checks if necessary.
  Check Configuration: Review the configuration settings for serial number management in the SAP system to ensure they are set up correctly.
  Consult with IT Support: If the issue persists, it may be necessary to consult with your IT support team or SAP Basis team to investigate any underlying system issues or data inconsistencies.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  IQ01 (Create Serial Number)
  IQ02 (Change Serial Number)
  IQ03 (Display Serial Number)
  /SCWM/PRD (Product Master in EWM)
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to serial number management.
  Documentation: Review SAP documentation on serial number management and warehouse management for best practices and troubleshooting steps.
  
  By following these steps, you should be able to resolve the error and prevent it from occurring in the future.