How To Fix FDT_WD_EXPRESSION017 - Cannot add the node as sibling node to itself

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_WD_EXPRESSION -

• Message number: 017

• Message text: Cannot add the node as sibling node to itself

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_WD_EXPRESSION017 - Cannot add the node as sibling node to itself ?

  The SAP error message FDT_WD_EXPRESSION017 ("Cannot add the node as sibling node to itself") typically occurs in the context of SAP's Floorplan Manager (FPM) or Web Dynpro applications when there is an attempt to manipulate the UI component tree in a way that is not allowed. This error indicates that there is an attempt to add a node as a sibling to itself, which is logically incorrect.
  Cause:
  
  Incorrect Node Manipulation: The error usually arises when there is a programming logic error in the Web Dynpro application or FPM configuration. For example, if a node is being added to a parent node, and the same node is being referenced as a sibling, it leads to this error.
  Data Binding Issues: If the data model is not correctly defined or if there are issues with the binding of nodes, it can lead to attempts to manipulate nodes incorrectly.
  Recursive Calls: If there are recursive calls in the code that lead to the same node being processed multiple times, it can trigger this error.
  
  Solution:
  
  Review the Code: Check the code where the node manipulation is happening. Ensure that you are not trying to add the same node as a sibling to itself. Look for any loops or recursive calls that might be causing this.
  Check Node Definitions: Ensure that the node definitions in the context are correct and that you are not inadvertently trying to add a node to itself.
  Debugging: Use debugging tools to step through the code and identify where the error is being triggered. Look for the specific line of code that is causing the issue.
  Data Model Validation: Validate the data model and ensure that the structure of the nodes is as expected. Make sure that the parent-child relationships are correctly defined.
  Consult Documentation: Refer to SAP documentation for Web Dynpro and FPM to understand the correct usage of nodes and their relationships.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context or fixes.
  Community Forums: Look for discussions in SAP Community forums or other developer forums where similar issues may have been discussed.
  SAP Support: If the issue persists and you cannot find a resolution, consider reaching out to SAP Support for assistance.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.