How To Fix /IWBEP/CM_CP033 - No content type header has been returned by the consumed service

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_CP -

• Message number: 033

• Message text: No content type header has been returned by the consumed service

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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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_CP033 - No content type header has been returned by the consumed service ?

  The SAP error message /IWBEP/CM_CP033 No content type header has been returned by the consumed service typically occurs when a service that is being consumed does not return a valid Content-Type header in its HTTP response. This can lead to issues in processing the response, especially in OData services where the content type is crucial for interpreting the data format.
  Causes:
  
  Service Configuration Issues: The service might not be configured correctly to return the appropriate content type.
  Backend Service Errors: The backend service might be encountering an error and not returning a proper response.
  Network Issues: There could be network-related issues that prevent the service from returning a valid response.
  Service Not Implemented: The service might not be implemented correctly or is not available.
  Middleware Issues: If there is middleware involved, it might be altering the response in a way that removes the content type.
  
  Solutions:
  
  Check Service Implementation: Ensure that the backend service is implemented correctly and is capable of returning a valid response with the appropriate content type.
  Inspect HTTP Response: Use tools like Postman or browser developer tools to inspect the HTTP response from the service. Check if the Content-Type header is present and correctly set (e.g., application/json, application/xml).
  Review Service Configuration: Verify the configuration settings of the OData service in SAP Gateway. Ensure that the service is activated and properly configured.
  Error Handling in Backend: Implement proper error handling in the backend service to ensure that it returns a valid response even in case of errors.
  Check Middleware: If there is middleware involved, check its configuration to ensure it is not stripping out the Content-Type header.
  Debugging: If you have access to the backend code, consider debugging the service to identify where the response is being generated and why the content type is missing.
  
  Related Information:
  
  SAP Gateway: Understanding how SAP Gateway works and how it interacts with backend services can provide insights into resolving this issue.
  OData Protocol: Familiarity with the OData protocol and its requirements for content types can help in diagnosing issues related to service responses.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions to common problems.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.