Empty response: face Identify API (v1.0-preview) using the whole personDirectory as candidadtes (passing the personIds parameters with an array [*])

Question

Hello!
I am using the Face identify operation, with the API v1.0-preview. There is an option to use a whole personDirectory as possible candidates to match a given faceId. In order to do so, you should use the parameter --> "personIds": ["*"] inside the body.
The problem is that I am getting an empty response [ ] with the "personIds": ["*"] parameter, however, if I explicitely pass a list of personIds (which are inside the personDirectory), the request works, and I am able to get the right candidate as output.
My FaceAPI resource is located in the west-central region.

Answer 1

Hello dear @YutongTie-MSFT , sorry I didn't reply sooner to your answer. The service started working normally again later the same day.

However, now im facing the issue that access to PersonDirectory API V1.0-preview is throwing a 403 - UnsupportedFeature Error.

The service was working fine until last week, but now I am not able to perform more requests, and I keep getting the same "403 - UnsupportedFeature Error" even to list the persons inside the persondirectory.

Did Azure change anything regarding the access to the Face v1.0-preview API ? My resource is located in west-central US, so this API should be accessible according the documentation:
https://westcentralus.dev.cognitive.microsoft.com/docs/services/face-v1-0-preview/operations/5f066755c65fefa4a43a748a

Since this problem is not exactly the same as the title in the post, I can open a new Question. Let me know.

Thank you for your time!

Regards,

Pablo.