Incomplete Error Message is Displayed for an Instance in Which a Successful Callback Response Fails

If you create an integration with a source (inbound) adapter configured with a successful callback response (for example, RightNow, Sales Cloud, ERP, or HCM) and the successful callback response fails, the instance is displayed as failed in the Tracking page. If you then click the primary business identifier link for this failed instance on the Tracking page, then click the View Error link on the instance details page, an error message of Not Found is displayed. This message does not provide a clear indication of what specifically failed. If you receive this error, check if the successful callback response endpoint is disabled.