How To Fix FDT_EXPRESSIONS779 - Sorting on deep component &1 is not supported

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 779

• Message text: Sorting on deep component &1 is not supported

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS779 - Sorting on deep component &1 is not supported ?

  The SAP error message FDT_EXPRESSIONS779 indicates that there is an issue with sorting on a deep component in a data structure, typically when working with expressions in the context of SAP Fiori or SAP UI5 applications. This error usually arises when you attempt to sort a field that is nested within a complex data structure, which is not supported by the underlying framework.
  Cause:
  
  Deep Component Sorting: The error occurs because the sorting operation is being attempted on a field that is not directly accessible or is nested too deeply within the data structure.
  Data Model Limitations: The data model being used may not support sorting on certain deep components due to performance or design constraints.
  Incorrect Configuration: There may be a misconfiguration in the way the data model or the binding is set up in the application.
  
  Solution:
  
  Flatten the Data Structure: If possible, consider flattening the data structure so that the fields you want to sort on are at a higher level in the hierarchy.
  Use a Different Field: If sorting on the deep component is not essential, consider using a different field that is directly accessible and can be sorted without issues.
  Custom Sorting Logic: Implement custom sorting logic in your application code. This may involve fetching the data, sorting it in the application layer, and then displaying it.
  Check Data Binding: Review the data binding configuration in your application. Ensure that the binding is correctly set up to allow for sorting on the desired fields.
  Consult Documentation: Refer to the SAP documentation for the specific version you are using to understand the limitations and best practices regarding sorting in your context.
  
  Related Information:
  
  SAP Fiori Elements: If you are using SAP Fiori Elements, check the annotations in your OData service to ensure that sorting is properly defined.
  OData Services: Review the OData service being used to ensure that it supports the operations you are trying to perform, including sorting.
  Performance Considerations: Be aware that sorting on deep components can lead to performance issues, so it is often better to avoid it if possible.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support or consulting with a developer who has experience with the specific SAP technologies you are using.