How To Fix /IWBEP/CM_MGW_RT173 - Specify an entity key to calculate a target in an entity list

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_MGW_RT -

• Message number: 173

• Message text: Specify an entity key to calculate a target in an entity list

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_MGW_RT173 - Specify an entity key to calculate a target in an entity list ?

  The SAP error message /IWBEP/CM_MGW_RT173 typically occurs in the context of SAP Gateway and OData services. This error indicates that a request to an OData service is missing a required entity key, which is necessary for the service to identify the specific entity that the operation should target.
  Cause:
  The error is usually caused by one of the following reasons:
  
  Missing Entity Key: The request does not include the necessary key parameters to identify the entity in the entity set.
  Incorrect URL: The URL used in the request may not be correctly formatted, leading to the omission of the entity key.
  Improperly Defined OData Service: The OData service may not be correctly defined to handle the request, or the entity set may not be properly configured.
  Client-Side Issues: The client application making the request may not be sending the correct parameters or may be misconfigured.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check the Request URL: Ensure that the URL used in the request includes the correct entity key. For example, if you are trying to access a specific entity, the URL should look something like this:
  /EntitySetName(EntityKey='Value')
  Make sure that EntitySetName and EntityKey are correctly specified.
  
  
  Review OData Service Definition: Verify that the OData service is correctly defined in the SAP Gateway. Check the service metadata to ensure that the entity set and keys are properly configured.
  
  
  Test with Postman or SAP Gateway Client: Use tools like Postman or the SAP Gateway Client to manually test the OData service. This can help you identify if the issue is with the request format or the service itself.
  
  
  Check Client Application: If you are using a client application (like Fiori or a custom app), ensure that it is correctly configured to send the required entity keys in the requests.
  
  
  Debugging: If you have access to the backend, you can debug the OData service implementation to see how the request is being processed and where it might be failing.
  
  
  Consult Documentation: Refer to the SAP documentation for OData services and the specific service you are working with to ensure compliance with expected formats and requirements.
  
  
  Related Information:
  
  SAP Gateway: This is a technology that allows you to connect devices, environments, and applications to SAP systems. Understanding how it works can help in troubleshooting issues.
  OData Protocol: Familiarize yourself with the OData protocol, which is used for querying and updating data. Understanding its structure can help in forming correct requests.
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide additional guidance on this error.
  
  By following these steps, you should be able to identify and resolve the issue causing the /IWBEP/CM_MGW_RT173 error.