/mcpTroubleshooting Cause Description Possible Errors This error would contain the details of the missing or incorrect or error data in the response itself as described above but for further debugging the traces can be analyzed. The causes of this error can be that the input data which is required for processing the API request is either incomplete or incorrect. This means "Bad request". The error signifies that the data provided in the request is not valid. 400 To troubleshoot this type of error, one has to look into the stack trace returned in the response, which will clearly specify the exception. For further debugging, one must look into the traces for errors as the errors are quite prominently logged with a lot of details. The causes of this error can be multiple. Generally those are the scenarios which should have been handled in the application but not done. This means "Internal Server Error". The error signifies that there has been an error while processing the request and this error is not handled by the application. 500 Cisco Unity Connection Imaging Interface (CUII) API 12 Cisco Unity Connection Imaging Interface (CUII) API -- Error Handling Possible Errors