How To Fix PO128 - Place the cursor on a valid line

SAP Error Message - Details

• Message type: E = Error

• Message class: PO - Spooler message

• Message number: 128

• Message text: Place the cursor on a valid line

What causes this issue?

The cursor was not positioned in the list when a function was selected.

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?

Position the cursor on the corresponding line, then call the function.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message PO128 - Place the cursor on a valid line ?

  The SAP error message "PO128: Place the cursor on a valid line" typically occurs when a user attempts to perform an action in a Purchase Order (PO) or related document but the system does not recognize the line item as valid. This can happen for several reasons. Here’s a breakdown of the potential causes, solutions, and related information:
  Causes:
  
  Invalid Line Selection: The cursor is not positioned on a valid line item in the PO. This can happen if the user clicks on a blank line or a header line instead of a specific item.
  Line Item Deletion: The line item may have been deleted or is no longer available in the document.
  Display Mode: The user might be in a display mode where editing or certain actions are not allowed.
  Authorization Issues: The user may not have the necessary permissions to perform actions on the selected line item.
  Document Status: The document may be in a status that does not allow changes (e.g., completed, closed).
  
  Solutions:
  
  Select a Valid Line: Ensure that the cursor is placed on a valid line item. Click directly on the line item you wish to work with.
  Check Document Status: Verify the status of the Purchase Order. If it is completed or closed, you may need to create a new document or change the status before making edits.
  Switch to Edit Mode: If you are in display mode, switch to edit mode to enable actions on the line items.
  Review Authorizations: Check with your SAP administrator to ensure you have the necessary permissions to perform the action on the selected line.
  Refresh the Document: Sometimes, refreshing the document or reloading the transaction can resolve temporary glitches.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as ME21N (Create Purchase Order), ME22N (Change Purchase Order), and ME23N (Display Purchase Order).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Training: Ensure that users are trained on how to navigate and interact with Purchase Orders in SAP to minimize errors.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP support team or refer to SAP documentation for further troubleshooting steps.