This endpoint creates a new submission for a candidate at HB and initiates the screening process. The URI format is: https://hb-host.tld/api/submissions/XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXIf the request cannot be processed due to misformatted or untranslatable data, the API should response with HTTP 400 Bad Request errorIf the candidate_ref is not valid then the API should response with HTTP 404 Not Found error.If the request cannot be processed due to data validation errors, the API should respond with HTTP 403 Forbidden and an appropriate error response.