Application warning when using Fulfillment API in 2022-04 version

Hello!

I have a question related to using deprecated endpoint in API version 2022-04:

If we continue using POST /orders/#order_id/fulfillments.json will our app be marked as App using deprecated resources during installation?

Thanks!

Yes it will if it does not do so already. The /orders//fulfillments.json endpoint is deprecated and will be removed.