Cannot add HIDDEN shipment method to checkout through REST API
I am strugling with order checkout throgh REST API. I am trying to specify shipment_method::id ( for example: core|672058|2487959) .
Checkout validation request: /checkouts/319026705/validate returns error: shipment.method.required: Select a shipping method.
With visible shipment method is everything fine, but with HIDDEN shipment method orde checkout does not validate it.
Can you give me an advice?