curl -u "user:key" -H "Content-Type: application/json" -H "Accept: application/json" -d "{\"url\": \"https://www.google.com\", \"orientation\": \"portrait\", \"browsers\": [{\"os\": \"ios\", \"os_version\": \"14.0\", \"device\": \"iPhone 12 Pro Max\"}], \"wait_time\": 5, \"quality\": \"compressed\"}" https://www.browserstack.com/screenshots 

{"message":"Validation Failed","errors":[{"field":"os_version","code":"invalid"}]}