How To Fix /IWBEP/CM_MGW_RT223 - Entity Type '&1': Key property '&2' must not be technical

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_MGW_RT -

• Message number: 223

• Message text: Entity Type '&1': Key property '&2' must not be technical

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_MGW_RT223 - Entity Type '&1': Key property '&2' must not be technical ?

  The SAP error message /IWBEP/CM_MGW_RT223 indicates that there is an issue with the definition of an entity type in your OData service. Specifically, the error states that a key property of the entity type is considered "technical," which is not allowed in the context of OData services.
  Cause:
  
  Technical Key Properties: In OData, key properties must be business-relevant and should not be technical identifiers (like system-generated IDs). A technical key is typically a field that is not meaningful in the business context, such as a GUID or a system-generated number.
  Entity Definition: The entity type definition in the Data Model might have been incorrectly set up, where a technical field is being used as a key property.
  Model Configuration: The configuration of the OData model might not align with the expected standards for key properties.
  
  Solution:
  
  
  Review Entity Type Definition: Check the definition of the entity type in your OData service. Ensure that the key property is a business-relevant field. You can do this by:
  
  Navigating to the Data Model in the SAP Gateway Service Builder (transaction code SEGW).
  Identifying the entity type that is causing the error.
  Reviewing the properties defined for that entity type and ensuring that the key property is not a technical field.
  
  
  
  Change Key Property: If a technical field is being used as a key, replace it with a suitable business key. This could be a field that uniquely identifies a business object, such as a customer number, order number, etc.
  
  
  Regenerate the Service: After making changes to the entity type definition, regenerate the OData service to ensure that the changes take effect. This can be done in the Service Builder by selecting the service and choosing the "Generate" option.
  
  
  Test the Service: After regeneration, test the OData service to ensure that the error is resolved and that the service behaves as expected.
  
  
  Related Information:
  
  OData Standards: Familiarize yourself with OData standards regarding entity types and key properties. The OData specification outlines the requirements for defining keys.
  SAP Gateway Documentation: Refer to the official SAP Gateway documentation for best practices in defining entity types and properties.
  Debugging Tools: Use transaction codes like /IWBEP/REG_SERVICE to register and manage OData services, and /IWBEP/ERROR_LOG to check for additional error logs that might provide more context.
  
  By following these steps, you should be able to resolve the error and ensure that your OData service is correctly configured.