How To Fix L3779 - Pick HU assignment only allowed with empty HUs

SAP Error Message - Details

• Message type: E = Error

• Message class: L3 -

• Message number: 779

• Message text: Pick HU assignment only allowed with empty HUs

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message L3779 - Pick HU assignment only allowed with empty HUs ?

  The SAP error message L3779, "Pick HU assignment only allowed with empty HUs," typically occurs in the context of handling handling units (HUs) in warehouse management processes. This error indicates that you are trying to assign a handling unit (HU) that is not empty to a picking operation, which is not allowed in the system.
  Cause:
  
  Non-Empty Handling Unit: The primary cause of this error is that the handling unit you are trying to assign to a picking operation contains stock. SAP requires that handling units be empty before they can be assigned for picking.
  Incorrect Process Flow: The process flow may not be followed correctly, leading to attempts to pick from HUs that are not in the correct state.
  Configuration Issues: There may be configuration settings in the warehouse management module that are not aligned with the intended process.
  
  Solution:
  
  Check the Handling Unit: Verify the contents of the handling unit you are trying to assign. If it contains stock, you will need to either empty it or use a different handling unit that is empty.
  Empty the Handling Unit: If the handling unit must be used, you can perform a stock removal or transfer to empty the handling unit before attempting to assign it for picking.
  Use a Different Handling Unit: If the current handling unit cannot be emptied, consider using a different handling unit that is already empty for the picking operation.
  Review Process Flow: Ensure that the process flow for picking and handling units is being followed correctly. This may involve checking the steps leading up to the picking operation.
  Consult Documentation: Review SAP documentation or help resources for specific instructions related to handling units and picking processes in your version of SAP.
  
  Related Information:
  
  Handling Units (HUs): In SAP, handling units are used to manage and track stock in logistics. They can be pallets, boxes, or any other type of packaging that contains stock.
  Warehouse Management (WM): This error is related to the Warehouse Management module in SAP, which deals with the management of stock in warehouses.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as LT03 (Create Transfer Order), LT12 (Confirm Transfer Order), and HU-related transactions to manage handling units effectively.
  SAP Notes: Check for any SAP Notes related to this error message for additional insights or patches that may address specific issues.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP support team or a technical consultant who can provide more tailored assistance based on your specific SAP configuration and business processes.