How To Fix VHUAP204 - To assign HUs, select one header row only

SAP Error Message - Details

• Message type: E = Error

• Message class: VHUAP - Messages for Packing Transaction Applications (FGrp VHUDIAL)

• Message number: 204

• Message text: To assign HUs, select one header row only

What causes this issue?

You must select exactly one header row to include HUs in an existing
delivery.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

To include HUs in an existing delivery, select exactly one delivery that
is to be assigned. Select the HUs that you want to reassign. Execute the
function <LS>Assign HU
</> to assign the selected HUs to the selected delivery.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message VHUAP204 - To assign HUs, select one header row only ?

  Certainly! Here's a detailed explanation for the SAP error message VHUAP204: "To assign HUs, select one header row only":
  
  Error Message
  VHUAP204: To assign HUs, select one header row only
  
  Cause
  This error occurs in the Handling Unit (HU) management process, typically during packing or unpacking activities in SAP Logistics Execution (LE) or Warehouse Management (WM). The system expects the user to select exactly one header row (i.e., one Handling Unit or one delivery/document header) when assigning Handling Units.
  If multiple header rows are selected simultaneously, the system cannot determine which specific HU to assign or process, hence it throws this error.
  
  When does it occur?
  
  When you try to assign Handling Units (HUs) in a transaction like VL02N (Change Outbound Delivery), LT03 (Create Transfer Order), or other HU-related transactions.
  When multiple header rows (e.g., multiple deliveries or multiple HUs) are selected in the UI, but the action requires a single HU or delivery header to be selected.
  
  
  Solution
  
  Select only one header row before attempting to assign Handling Units.
  Make sure you are working on a single delivery or handling unit header at a time.
  If you need to assign HUs to multiple deliveries or documents, process them one by one.
  Check the selection screen or the list view and deselect any extra rows, leaving only one header row selected.
  
  
  Additional Information
  
  This message enforces the logical requirement that HU assignment is a one-to-one or one-to-many operation starting from a single header.
  Handling Units are managed at the header level, so the system needs a clear context.
  If you are using a custom program or enhancement, ensure that the selection logic complies with this requirement.
  This message is part of the standard SAP Handling Unit Management (HUM) error messages.
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Message
  VHUAP204: To assign HUs, select one header row only
  
  
  Cause
  Multiple header rows selected when only one is allowed
  
  
  Solution
  Select exactly one header row before assigning HUs
  
  
  Context
  Occurs in HU assignment during delivery or warehouse processes
  
  
  
  
  If you need further help, please provide the transaction code or process step where this error occurs.