Hikvision door station - ISAPI remoteCheck

Hi all,

'm going to get unlock door signal from Hikvision DS-KV9503-WBE1 door station. The signal could be face recognition or unlock button from the hik-connect app. Only software way is available, so I use ISAPI —
/ISAPI/AccessControl/remoteCheck/capabilities?format=json (4.13.7 “Remotely Verify Access Control Events”).

but it returns always “failed” —

“checkResult”: { “@opt”: [“success, failed”]}

Please advise me…