How To Fix /FTI/AUTHORING_ERROR023 - Could not render entity type '&1'. No key property found.

SAP Error Message - Details

• Message type: E = Error

• Message class: /FTI/AUTHORING_ERROR -

• Message number: 023

• Message text: Could not render entity type '&1'. No key property found.

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /FTI/AUTHORING_ERROR023 - Could not render entity type '&1'. No key property found. ?

  The SAP error message /FTI/AUTHORING_ERROR023 indicates that there is an issue with rendering an entity type in the context of SAP Fiori or SAP Gateway services. The specific message "Could not render entity type '&1'. No key property found." suggests that the system is unable to identify a key property for the specified entity type, which is essential for uniquely identifying records in a database.
  Cause:
  
  Missing Key Property: The entity type defined in the OData service does not have a key property defined. Every entity type in an OData service must have at least one key property to uniquely identify instances of that entity.
  Incorrect Metadata Definition: The metadata for the OData service may be incorrectly defined, leading to the absence of key properties.
  Service Activation Issues: The OData service may not be properly activated or may have been modified without proper regeneration of the service.
  Model Issues: There may be issues with the underlying data model or the way the entity types are defined in the data model.
  
  Solution:
  
  
  Check Entity Type Definition:
  
  Go to the Data Model (e.g., in SEGW transaction) and check the definition of the entity type that is causing the error.
  Ensure that at least one property is marked as a key property. You can do this by selecting the property and marking it as a key in the properties section.
  
  
  
  Regenerate the OData Service:
  
  If you have made changes to the entity type or its properties, regenerate the OData service. In the SEGW transaction, you can do this by right-clicking on the service and selecting "Generate Runtime Objects".
  
  
  
  Check Metadata:
  
  Use the OData service URL to check the metadata (e.g., http://<host>:<port>/sap/opu/odata/sap/<service_name>/$metadata). Ensure that the key properties are correctly defined in the metadata.
  
  
  
  Activate the Service:
  
  Ensure that the OData service is activated in the SAP Gateway. You can do this in the /IWFND/MAINT_SERVICE transaction.
  
  
  
  Review Related Documentation:
  
  Check SAP Notes and documentation related to the specific version of SAP you are using, as there may be known issues or patches available.
  
  
  
  Debugging:
  
  If the issue persists, consider debugging the service to trace where the error occurs. This may provide additional insights into what is going wrong.
  
  
  
  Related Information:
  
  OData Services: Understanding how OData services work in SAP is crucial. Familiarize yourself with the concepts of entity types, key properties, and service definitions.
  SAP Gateway: Knowledge of SAP Gateway and its configuration can help in troubleshooting issues related to service activation and metadata.
  SAP Community: Engaging with the SAP Community can provide insights from other users who may have faced similar issues.
  
  By following these steps, you should be able to resolve the error and ensure that your OData service functions correctly.