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.

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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