How To Fix /SCWM/RF_EN387 - Cannot unassign HUC; loading has started, unload HUC first

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCWM/RF_EN -

• Message number: 387

• Message text: Cannot unassign HUC; loading has started, unload HUC first

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SCWM/RF_EN387 - Cannot unassign HUC; loading has started, unload HUC first ?

  The SAP error message /SCWM/RF_EN387 Cannot unassign HUC; loading has started, unload HUC first typically occurs in the context of warehouse management, particularly when dealing with handling units (HUs) in the SAP Extended Warehouse Management (EWM) module. This error indicates that you are trying to unassign a handling unit (HU) that is currently involved in a loading process, which is not allowed until the loading is completed or the HU is unloaded.
  Cause:
  
  Loading Process Active: The handling unit you are trying to unassign is currently in the process of being loaded onto a transportation unit (like a truck or container).
  System Lock: The system prevents unassignment of HUs that are actively involved in a loading operation to maintain data integrity and avoid inconsistencies in inventory management.
  
  Solution:
  To resolve this error, you need to follow these steps:
  
  
  Check Loading Status: Verify if the handling unit is indeed in the process of being loaded. You can do this by checking the loading documents or the status of the transportation unit.
  
  
  Unload the Handling Unit: If the HU is actively being loaded, you will need to unload it first. This can typically be done through the following steps:
  
  Navigate to the relevant transaction for unloading (e.g., using the RF interface or the EWM GUI).
  Select the transportation unit and the handling unit you wish to unload.
  Execute the unload process.
  
  
  
  Retry Unassignment: Once the handling unit has been successfully unloaded, you can attempt to unassign it again.
  
  
  Check for Errors: If you continue to encounter issues, check for any other error messages or logs that might provide additional context. It may also be helpful to consult with your SAP support team or refer to SAP documentation for further troubleshooting.
  
  
  Related Information:
  
  Handling Units (HUs): In SAP EWM, handling units are used to manage and track physical items in the warehouse. They can represent pallets, boxes, or any other packaging unit.
  Loading and Unloading Processes: Understanding the loading and unloading processes in SAP EWM is crucial for effective warehouse management. Familiarize yourself with the relevant transactions and processes.
  SAP Notes and Documentation: Check SAP Notes for any known issues or updates related to this error message. The SAP Help Portal can also provide detailed documentation on handling units and warehouse processes.
  
  By following these steps, you should be able to resolve the error and continue with your warehouse operations.