How To Fix /SCWM/TW_UI104 - Handling unit &1 exists already

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCWM/TW_UI -

• Message number: 104

• Message text: Handling unit &1 exists already

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SCWM/TW_UI104 - Handling unit &1 exists already ?

  The SAP error message /SCWM/TW_UI104 Handling unit &1 exists already typically occurs in the SAP Extended Warehouse Management (EWM) module when you attempt to create a handling unit (HU) that already exists in the system. This can happen during various processes, such as creating handling units for goods receipts, production, or during the packing process.
  Cause:
  
  Duplicate Handling Unit: The handling unit you are trying to create already exists in the system. This could be due to a previous transaction that created the same HU.
  Incorrect Input: The input data might be incorrect, leading to the system trying to create a handling unit with an existing identifier.
  System Configuration: There might be issues with the configuration of handling units in the system, leading to unexpected behavior.
  
  Solution:
  
  
  Check Existing Handling Units: 
  
  Use transaction codes like /SCWM/HU or /SCWM/PRDI to check if the handling unit already exists in the system. You can search for the HU using the identifier provided in the error message.
  
  
  
  Use a Different Identifier: 
  
  If you need to create a new handling unit, ensure that you are using a unique identifier that does not conflict with existing handling units.
  
  
  
  Review the Process: 
  
  Review the process that led to the creation of the handling unit. Ensure that the steps are being followed correctly and that there are no duplicate attempts to create the same HU.
  
  
  
  Check for System Errors: 
  
  If you believe the handling unit should not exist, check for any system errors or inconsistencies. You may need to consult with your SAP Basis or technical team to investigate further.
  
  
  
  Consult Documentation: 
  
  Refer to SAP documentation or help resources for more detailed information on handling units and their management in EWM.
  
  
  
  Contact SAP Support: 
  
  If the issue persists and you cannot resolve it, consider reaching out to SAP support for assistance. They can provide insights based on the specific configuration and version of your SAP system.
  
  
  
  Related Information:
  
  Handling Units in EWM: Understanding how handling units work in SAP EWM is crucial. Handling units are used to manage the physical packaging of goods and can be created, modified, and processed throughout the warehouse operations.
  Transaction Codes: Familiarize yourself with relevant transaction codes in EWM for managing handling units, such as /SCWM/HU, /SCWM/PRDI, and others.
  SAP Notes: Check SAP Notes for any known issues or patches related to handling units in your version of SAP EWM.
  
  By following these steps, you should be able to identify the cause of the error and take appropriate action to resolve it.