How To Fix VHUAP201 - Select one header row (sales order, stock tr. order or delivery) only

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 201

• Message text: Select one header row (sales order, stock tr. order or delivery) only

What causes this issue?

You want to access the packing transaction, but have either selected
<LS>no</> header line (sales order, stock transport order or delivery)
at all or <LS>several</> header lines.

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?

Select a header line (sales order, stock transport order or delivery)
order to access the packing transaction. Handling units which you
selected are ignored in this function.

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 VHUAP201 - Select one header row (sales order, stock tr. order or delivery) only ?

  SAP Error Message:
  
  VHUAP201: Select one header row (sales order, stock tr. order or delivery) only
  
  Cause:
  This error occurs when you are trying to perform an action (such as creating a billing document, delivery, or other processing) in a transaction that requires exactly one header row to be selected, but either:
  
  No header row is selected, or  
  More than one header row is selected.
  
  In SAP, certain processes require the user to select exactly one header document (e.g., a sales order, stock transport order, or delivery) to proceed. Selecting multiple headers or none violates this requirement, triggering the error.
  
  When does it typically occur?
  
  In transactions related to billing, delivery creation, or order processing where the system expects a single document to be processed at a time.
  For example, in VL01N (Create Outbound Delivery), VF01 (Create Billing Document), or similar transactions where you select documents from a list.
  
  
  Solution:
  
  Select exactly one header row before proceeding.  
  
  If you have selected multiple rows, deselect all but one.  
  If no row is selected, select one header row.  
  
  
  Ensure you are selecting the header row, not item rows or sub-rows.  
  If you are unsure which row is the header, look for the row that represents the entire document (sales order, delivery, or stock transport order), usually indicated by a document number or a specific icon.
  
  
  Additional Information:
  
  This message is a standard validation to prevent processing multiple documents simultaneously when the transaction logic only supports single document processing.
  If you need to process multiple documents, check if the transaction or report supports batch processing or if there is a different transaction designed for mass processing.
  Sometimes, the UI layout or ALV grid can be confusing; ensure you understand the structure of the list to select the correct row.
  If this error appears unexpectedly, verify if any custom enhancements or user exits are affecting the selection logic.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Error
  VHUAP201: Select one header row only
  
  
  Cause
  No or multiple header rows selected
  
  
  Solution
  Select exactly one header row (sales order, stock transport order, or delivery) before proceeding
  
  
  Context
  Occurs in transactions requiring single document processing
  
  
  
  
  If you provide the exact transaction or scenario where this error occurs, I can give more tailored advice.