How To Fix CFD_GW_UI008 - ETag determination failed

SAP Error Message - Details

• Message type: E = Error

• Message class: CFD_GW_UI - TechnicalMessages for Custom Field Maintenance oData Service

• Message number: 008

• Message text: ETag determination failed

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message CFD_GW_UI008 - ETag determination failed ?

  The SAP error message CFD_GW_UI008 "ETag determination failed" typically occurs in the context of SAP Gateway services, particularly when there is an issue with the ETag (Entity Tag) mechanism used for caching and versioning of resources in OData services. This error can arise due to various reasons, including issues with the backend service, data inconsistencies, or configuration problems.
  Causes:
  
  Backend Service Issues: The backend service may not be returning the expected ETag value, or there may be an issue with the service itself.
  Data Inconsistencies: If the data being accessed has inconsistencies or is in an invalid state, it may lead to failure in ETag determination.
  Configuration Problems: Incorrect configuration of the OData service or the Gateway service can lead to this error.
  Caching Issues: Problems with the caching mechanism in the Gateway can also result in ETag determination failures.
  Authorization Issues: Lack of proper authorization to access the resource can prevent the ETag from being retrieved.
  
  Solutions:
  
  Check Backend Service: Ensure that the backend service is functioning correctly. You can test the service independently to verify that it returns the expected ETag values.
  Review Data: Check the data being accessed for any inconsistencies or issues. Ensure that the data is in a valid state.
  Service Configuration: Review the configuration of the OData service in the SAP Gateway. Ensure that all settings are correct and that the service is properly registered.
  Clear Cache: If caching is suspected to be an issue, try clearing the cache in the SAP Gateway. This can sometimes resolve ETag determination issues.
  Check Authorizations: Ensure that the user has the necessary authorizations to access the resource. Lack of proper permissions can lead to failures in retrieving the ETag.
  Debugging: If the issue persists, consider enabling debugging for the OData service to get more detailed information about where the failure is occurring.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Documentation: Review the official SAP documentation for OData services and SAP Gateway to ensure that you are following best practices in service implementation and configuration.
  
  If the problem continues after trying the above solutions, it may be necessary to involve SAP support for further assistance.