При попытке подписаться на push-уведомление .
в версии ios была добавлена область безопасности для push.mobileclient.
/api/preauth/v1/preauthorize] failure. state: 400, response: Invalid Security Check push.mobileclient
2018-06-08 00:02:21.162970-0400 MetLifeContigo[71791:617087] {"responseHeaders":{"Date":"Fri, 08 Jun 2018 04:02:58 GMT","Transfer-Encoding":"Identity","Content-Language":"en-US","Content-Type":"application/json","X-Powered-By":"Servlet/3.0","Connection":"close"},"status":400,"responseText":"{\"errorCode\":\"SECURITY_CHECK_NOT_FOUND\",\"errorMsg\":\"Invalid Security Check push.mobileclient\"}","responseJSON":{"errorCode":"SECURITY_CHECK_NOT_FOUND","errorMsg":"Invalid Security Check push.mobileclient"},"errorCode":"SECURITY_CHECK_NOT_FOUND","errorMsg":"Invalid Security Check push.mobileclient"}