How To Fix WXP426 - Select a node in the tree control

SAP Error Message - Details

• Message type: E = Error

• Message class: WXP - Retail Planning

• Message number: 426

• Message text: Select a node in the tree control

What causes this issue?

You have selected a processing function (for example, Explode nodes)
that affect the selected nodes in the tree control.
The cursor has, however, been positioned outwith the tree control and
the function cannot, therefore, be executed.

System Response

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

INCLUDE ISR_VERARBEITUNG OBJECT DOKU ID TX

How to fix this error?

Mark a node and call the function once again.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WXP426 - Select a node in the tree control ?

  Certainly! Here's detailed information about the SAP error message WXP426 - "Select a node in the tree control":
  
  Error Message:
  WXP426 - Select a node in the tree control
  
  Cause:
  This message typically appears in SAP Web Dynpro applications or other SAP GUI screens that use a tree control UI element. The error occurs when an action or function requires the user to select a node (an item) in a tree control, but no node has been selected.
  In other words, the system expects the user to highlight or choose a specific node in the tree structure before proceeding, but the user has either not selected anything or the selection is lost.
  
  When does it occur?
  
  When you try to perform an operation (e.g., display details, edit, delete) on a tree node without selecting any node.
  When a program or Web Dynpro component expects a node selection as input but receives none.
  In custom developments or standard SAP applications that use tree controls for navigation or data display.
  
  
  Solution:
  
  
  Select a Node:
  
  Simply select (click on) a node in the tree control before performing the action.
  Ensure that the node is highlighted or marked as selected.
  
  
  
  Check UI Behavior:
  
  If the node selection is not retained or the tree control does not allow selection, check for UI issues or bugs.
  Refresh the screen or restart the transaction if necessary.
  
  
  
  For Developers:
  
  Ensure that the program logic checks for node selection before proceeding.
  Add validation to prompt the user to select a node if none is selected.
  In Web Dynpro, verify that the node selection event is properly handled and the context node is correctly bound.
  
  
  
  Check Authorizations:
  
  Sometimes, if the user lacks authorization to view or select nodes, the tree may appear empty or unselectable.
  Verify user roles and authorizations if the tree control is empty or non-responsive.
  
  
  
  
  Additional Information:
  
  Message Class: WXP (Web Dynpro related messages)
  Message Number: 426
  This message is informational and prompts the user to take corrective action.
  Common in Web Dynpro ABAP applications, but can also appear in other SAP GUI tree controls.
  If this message appears unexpectedly or repeatedly, it may indicate a UI or programming issue.
  
  
  Example Scenario:
  In a Web Dynpro application displaying a hierarchical list of organizational units, the user tries to click a "Display Details" button without selecting any organizational unit in the tree. The system then shows message WXP426, prompting the user to select a node first.
  
  If you need help with a specific transaction or custom program where this error occurs, please provide more details!