/IWFND/MED070 - No inheritance hierarchy defined for model '&1'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/MED -

• Message number: 070

• Message text: No inheritance hierarchy defined for model '&1'

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.

Unfortunately, there isn't any extra information in this error notice.

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AnswerBot

• What is the cause and solution for SAP error message /IWFND/MED070 - No inheritance hierarchy defined for model '&1' ?

  The SAP error message /IWFND/MED070 No inheritance hierarchy defined for model '&1' typically occurs in the context of SAP Gateway and OData services. This error indicates that the system is unable to find an inheritance hierarchy for the specified model, which is necessary for the proper functioning of the OData service.
  Cause:
  
  Missing Inheritance Hierarchy: The error usually arises when the OData model is expected to have an inheritance hierarchy defined, but it is not set up in the system.
  Model Configuration Issues: There may be issues with the configuration of the OData model in the SAP Gateway Service Builder (transaction code SEGW).
  Service Activation: The OData service may not be properly activated or registered in the system.
  Model Name Mismatch: The model name specified in the error message may not match any defined models in the system.
  
  Solution:
  
  
  Define Inheritance Hierarchy:
  
  Go to the Service Builder (transaction SEGW).
  Open the relevant project and check the data model.
  Ensure that the inheritance hierarchy is defined correctly for the entities involved. You may need to create or adjust the hierarchy as needed.
  
  
  
  Check Model Configuration:
  
  Verify that the model is correctly configured and that all necessary entities and associations are defined.
  Ensure that the entity types are correctly set up to inherit from the base entity.
  
  
  
  Activate the OData Service:
  
  Use transaction /IWFND/MAINT_SERVICE to check if the OData service is activated.
  If it is not activated, activate it and check if the error persists.
  
  
  
  Check for Model Name:
  
  Ensure that the model name referenced in the error message matches the name defined in your project.
  If there are discrepancies, correct them in the project settings.
  
  
  
  Regenerate the Service:
  
  If changes were made to the model, regenerate the service to ensure that all changes are reflected.
  You can do this by right-clicking on the project in SEGW and selecting "Generate Runtime Objects".
  
  
  
  Check for Transport Issues:
  
  If the project was transported from one system to another, ensure that all necessary objects were included in the transport request.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  Documentation: Review the SAP Gateway documentation for best practices on defining inheritance hierarchies and configuring OData services.
  Debugging: If the issue persists, consider debugging the OData service to identify where the error is occurring in the processing logic.
  
  By following these steps, you should be able to resolve the /IWFND/MED070 No inheritance hierarchy defined for model '&1' error in your SAP system.