How To Fix SADL_GTK_GEN019 - Class &1 is not a subclass of SADL MPC

SAP Error Message - Details

• Message type: E = Error

• Message class: SADL_GTK_GEN - SADL GTK Generation Messages

• Message number: 019

• Message text: Class &1 is not a subclass of SADL MPC

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SADL_GTK_GEN019 - Class &1 is not a subclass of SADL MPC ?

  The SAP error message SADL_GTK_GEN019 indicates that there is an issue with the class definition in the context of the SAP Data Access Layer (SADL). Specifically, the error states that the class you are trying to use (denoted as &1) is not a subclass of the expected SADL Model Provider Class (MPC).
  Cause:
  This error typically occurs due to one of the following reasons:
  
  Incorrect Class Definition: The class you are trying to use does not inherit from the appropriate SADL MPC class. This could happen if the class was not properly defined or if it was modified incorrectly.
  Configuration Issues: There may be configuration issues in the SADL setup that prevent the system from recognizing the class as a valid subclass.
  Namespace Issues: The class might be in a different namespace that is not recognized by the SADL framework.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Class Definition:
  
  Ensure that the class you are trying to use is indeed a subclass of the appropriate SADL MPC class. You can do this by checking the class definition in the ABAP Workbench (SE80 or SE24).
  The class should extend from the correct SADL MPC class, which is typically SADL_MPC or a specific subclass of it.
  
  
  
  Review Implementation:
  
  If you have recently made changes to the class, review those changes to ensure that they do not violate the inheritance structure.
  Make sure that all required methods and attributes are correctly implemented.
  
  
  
  Check Configuration:
  
  Verify the configuration settings related to SADL in your system. Ensure that the necessary settings are in place for the class to be recognized as a valid MPC subclass.
  
  
  
  Namespace Verification:
  
  Ensure that the class is in the correct namespace and that there are no conflicts with other classes or namespaces.
  
  
  
  Rebuild the Model:
  
  If you have made changes to the class or its configuration, consider rebuilding the model to ensure that all changes are recognized by the system.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation for SADL to ensure that you are following the correct procedures for class creation and configuration.
  
  
  
  Related Information:
  
  SADL (SAP Data Access Layer): A framework that allows for the creation of data access models in SAP applications.
  MPC (Model Provider Class): A class that provides the model for the data access layer, defining the structure and behavior of the data model.
  ABAP Workbench: The development environment in SAP where you can create and manage classes, programs, and other development objects.
  
  If the issue persists after following these steps, consider reaching out to your SAP support team or consulting the SAP Community for further assistance.