How To Fix /FTI/INTERNAL_ERROR029 - Error in generation of DPC EXT class

SAP Error Message - Details

• Message type: E = Error

• Message class: /FTI/INTERNAL_ERROR -

• Message number: 029

• Message text: Error in generation of DPC EXT class

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /FTI/INTERNAL_ERROR029 - Error in generation of DPC EXT class ?

  The SAP error message /FTI/INTERNAL_ERROR029 Error in generation of DPC EXT class typically indicates an issue related to the generation of the Data Provider Class (DPC) in the context of SAP Gateway services. This error can arise due to various reasons, including issues with the service definition, inconsistencies in the underlying data model, or problems with the ABAP code.
  Causes:
  
  Syntax Errors: There may be syntax errors in the ABAP code of the DPC class or related classes.
  Inconsistent Data Model: The data model defined in the service might not be consistent with the underlying database or might have missing elements.
  Transport Issues: If the service was transported from one system to another, there might be inconsistencies or missing objects.
  Missing Annotations: Required annotations in the service definition might be missing or incorrectly defined.
  Authorization Issues: Lack of proper authorizations to access certain objects or classes can also lead to this error.
  
  Solutions:
  
  Check Syntax: Review the ABAP code in the DPC class and ensure there are no syntax errors. Use the ABAP Editor (SE38) to check for errors.
  Regenerate the Service: Try regenerating the service using transaction /IWFND/MAINT_SERVICE or /IWFND/GW_CLIENT to see if that resolves the issue.
  Check Data Model: Ensure that the data model is correctly defined and that all necessary elements are present. Use transaction SE11 to check the underlying database tables.
  Review Annotations: Verify that all required annotations are correctly defined in the service metadata.
  Transport Consistency: If the service was transported, ensure that all dependent objects were also transported correctly. Check for missing objects in the target system.
  Authorization Check: Ensure that you have the necessary authorizations to access and modify the service and its components.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as /IWFND/MAINT_SERVICE for service maintenance and /IWFND/GW_CLIENT for testing OData services.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error. You can search for specific error messages in the SAP Support Portal.
  Debugging: If the issue persists, consider debugging the DPC class to identify the exact point of failure. Use transaction SE80 to navigate to the DPC class and set breakpoints.
  Community Forums: Engage with the SAP Community or forums like SAP Community Network (SCN) for insights from other users who may have encountered similar issues.
  
  If the problem continues after trying these solutions, it may be beneficial to consult with your SAP Basis or ABAP development team for further assistance.