How To Fix FDT_EXPRESSIONS110 - Leaf &1 cannot have additional children

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_EXPRESSIONS - Formula & Derivation Tool: Expressions

• Message number: 110

• Message text: Leaf &1 cannot have additional children

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS110 - Leaf &1 cannot have additional children ?

  The SAP error message FDT_EXPRESSIONS110 with the description "Leaf &1 cannot have additional children" typically occurs in the context of the SAP Fiori or SAP UI5 applications when working with expressions or data binding in the context of the FDT (Field Definition Tool) or similar frameworks.
  Cause:
  This error indicates that you are trying to add child elements to a node that is defined as a "leaf" node in the data structure. A leaf node is a terminal node that does not have any children. In other words, it is a node that cannot have further subdivisions or child nodes. 
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check the Data Structure: Review the data structure you are working with. Ensure that you are not trying to add child nodes to a node that is defined as a leaf. 
  
  
  Modify the Node Definition: If you need to add children to this node, you may need to change its definition to allow for children. This might involve modifying the configuration in the FDT or the underlying data model.
  
  
  Review the Expression Logic: If you are using expressions to bind data, ensure that the expressions are correctly defined and that you are not inadvertently trying to bind child data to a leaf node.
  
  
  Debugging: Use debugging tools to trace where the error is occurring. This can help you identify the specific part of the code or configuration that is causing the issue.
  
  
  Consult Documentation: Refer to the SAP documentation for the specific version you are using. There may be additional guidelines or best practices for defining nodes and their relationships.
  
  
  Seek Help from SAP Community: If you are unable to resolve the issue, consider reaching out to the SAP Community or forums for assistance. Other users may have encountered similar issues and can provide insights.
  
  
  Related Information:
  
  FDT (Field Definition Tool): This tool is used for defining fields and their properties in SAP applications. Understanding how it works can help in troubleshooting issues related to data binding and node definitions.
  SAP UI5 Documentation: Familiarize yourself with the SAP UI5 framework, especially how it handles data binding and model definitions.
  Error Handling in SAP: Understanding how to handle errors in SAP applications can help you manage and troubleshoot issues more effectively.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution.