How To Fix /UI2/CACHE038 - [ &1 / '&2' ] rule supplies constant entity '&3'.

SAP Error Message - Details

• Message type: E = Error

• Message class: /UI2/CACHE -

• Message number: 038

• Message text: [ &1 / '&2' ] rule supplies constant entity '&3'.

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /UI2/CACHE038 - [ &1 / '&2' ] rule supplies constant entity '&3'. ?

  The SAP error message /UI2/CACHE038 [ &1 / '&2' ] rule supplies constant entity '&3'. typically relates to issues with the SAP Fiori Launchpad or the UI5 framework, particularly concerning the caching mechanism for UI elements. This error indicates that a specific rule in the cache is providing a constant entity, which may not be expected or valid in the context of the application.
  Cause:
  
  Caching Issues: The error often arises due to inconsistencies or corruption in the cache related to UI elements or Fiori applications.
  Configuration Problems: There may be misconfigurations in the Fiori Launchpad or the underlying OData services that are being used.
  Development Errors: If custom applications or extensions are developed, there might be issues in the code that lead to this error.
  Data Model Issues: The data model being used may not align with the expected structure, leading to constant entities being returned.
  
  Solution:
  
  
  Clear Cache: 
  
  Clear the cache for the Fiori Launchpad. This can often resolve issues related to stale or corrupted cache entries.
  You can do this by navigating to the Fiori Launchpad and using the "Clear Cache" option or by using transaction code /UI2/FLP and selecting the appropriate options.
  
  
  
  Check Configuration:
  
  Review the configuration of the Fiori Launchpad and ensure that all settings are correct.
  Verify the OData service configurations and ensure they are properly defined and activated.
  
  
  
  Debugging:
  
  If you have access to the development environment, use debugging tools to trace the execution and identify where the constant entity is being supplied.
  Check the relevant code for any hardcoded values or incorrect logic that might lead to this error.
  
  
  
  Review Custom Code:
  
  If you have custom applications, review the code for any issues that might lead to the generation of constant entities.
  Ensure that the data being returned from the backend services is in the expected format.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes or updates that might address this specific error.
  Look for any patches or updates that may resolve known issues related to this error message.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance. Provide them with detailed information about the error, including any relevant logs or screenshots.
  
  
  
  Related Information:
  
  SAP Fiori Launchpad: The central entry point for accessing Fiori applications.
  OData Services: The services that provide data to Fiori applications, which need to be correctly configured and functioning.
  UI5 Framework: The underlying framework for building Fiori applications, which may have specific requirements for data binding and entity management.
  
  By following these steps, you should be able to diagnose and resolve the error message /UI2/CACHE038.