Hello,

It seems like this documentation(https://docs.microsoft.com/en-us/rest/api/cognitiveservices/face/face/verifyfacetoperson) is not up to date. In the api, it implies that personGroupId or largePersonGroupId is optional, but at least one of them are required. For example,

When I submit a request without personGroupID or largePersonGroupId, it returns:

{

"error": {

    "code": "BadArgument",

    "message": "Request body is invalid."

}

}
while verifying FaceToFace(https://docs.microsoft.com/en-us/rest/api/cognitiveservices/face/face/verifyfacetoface)

you'd only require two face ids and no group ids. I'm not sure where to file this improvement/bug report, so I am posting it here...