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

VHUAP204 - Overview

• 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.

VHUAP204 - Details

• 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