Can't Add Request by API

Can't Add Request by API

Hello,

I've got an error:

{
    "response_status": {
        "status_code": 4000,
        "messages": [
            {
                "status_code": 4001,
                "field": "TECHNICIAN_KEY",
                "type": "failed",
                "message": "Extra parameter(s) not allowed."
            }
        ],
        "status": "failed"
    }
}

when I'm trying to Add Request via APIv3.

Seems like the problem is when I try to input some params like: TECHNICIAN_KEY or format json.

Im using postman for this and try via powershell to, no success.

please help