How To Fix FDT_WD_TOOLS100 - Child nodes must be unmarked to collapse a node

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_WD_TOOLS - Message Class for tools

• Message number: 100

• Message text: Child nodes must be unmarked to collapse a node

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_WD_TOOLS100 - Child nodes must be unmarked to collapse a node ?

  The SAP error message FDT_WD_TOOLS100 ("Child nodes must be unmarked to collapse a node") typically occurs in the context of the SAP Fiori Design Tools or when working with the Web Dynpro ABAP framework. This error indicates that you are trying to collapse a node in a hierarchical structure (like a tree or a list) that has child nodes marked or selected. 
  Cause:
  The error is caused by attempting to collapse a parent node that has child nodes that are currently marked or selected. In many user interfaces, collapsing a node that has selected child nodes is not allowed because it can lead to confusion about the state of those child nodes.
  Solution:
  To resolve this error, you need to ensure that all child nodes of the parent node you are trying to collapse are unmarked or deselected. Here are the steps you can follow:
  
  
  Identify the Parent Node: Locate the parent node that you are trying to collapse.
  
  
  Check Child Nodes: Look at the child nodes under the parent node. If any of them are marked or selected, you will need to unmark them.
  
  
  Unmark Child Nodes: Deselect or uncheck all the child nodes. This can usually be done by clicking on the checkbox next to each child node or using a context menu option to unselect them.
  
  
  Collapse the Parent Node: Once all child nodes are unmarked, you should be able to collapse the parent node without encountering the error.
  
  
  Related Information:
  
  User Interface Behavior: This behavior is common in tree structures or hierarchical views where the state of child nodes affects the ability to manipulate the parent node.
  SAP Fiori Design Tools: If you are using SAP Fiori Design Tools, ensure that you are familiar with the interface and how to manage selections within the design environment.
  Web Dynpro ABAP: If you are working with Web Dynpro ABAP, understanding the component structure and how nodes are managed can help prevent this error in the future.
  
  If you continue to experience issues after following these steps, consider checking for any updates or patches for the SAP system you are using, as there may be known issues or bugs that have been addressed in later versions. Additionally, consulting the SAP community or support channels can provide further assistance.