Provisioning devices as dedicated devices using Android Management API not working

Question

I have followed Android-Management-API quick start and successfully done all steps and provision a device with work profile mode. But when I tried provisioning devices(via QR code scan) as dedicated devices after factory reset, it fails and I do not see my device in "devices-list" under my organization. I see "device-policy" in settings>Google on device but when i click on "device policy" it shows that policy not synced and clicking "sync" manually shows "error updating policy". Can you please help if i misconfigure anything?

My policy is given below:

{
  "applications": [
    {
      "packageName": "com.google.android.gm",
      "installType": "FORCE_INSTALLED"
    }
  ],
  "debuggingFeaturesAllowed": true
}

My QRcode is given below:

{
    "android.app.extra.PROVISIONING_DEVICE_ADMIN_COMPONENT_NAME": "com.google.android.apps.work.clouddpc/.receivers.CloudDeviceAdminReceiver",
    "android.app.extra.PROVISIONING_DEVICE_ADMIN_SIGNATURE_CHECKSUM": "I5YvS0O5hXY46mb01BlRjq4oJJGs2kuUcHvVkAPEXlg",
    "android.app.extra.PROVISIONING_DEVICE_ADMIN_PACKAGE_DOWNLOAD_LOCATION": "https://play.google.com/managed/downloadManagingApp?identifier=setup",
    "android.app.extra.PROVISIONING_ADMIN_EXTRAS_BUNDLE":{
        "com.google.android.apps.work.clouddpc.EXTRA_ENROLLMENT_TOKEN": "{enrollment-token}"
    }
}