BARS - Receiver Requirements

We (Virtually Healthcare) are looking at being an endpoint (receivers on RHS in the diagram below) for BARS Application 5 - GP to Pharmacy.

Looking at the documentation on https://digital.nhs.uk/developer/api-catalogue/booking-and-referral-fhir/v1_2_0#overview--service-level

I’m led to believe that we will need to stand up a series of API’s which are listed on this page, as BARS FHIR API is essentially a pass through service.

Some of these look irrelevant to our role (in application 5), as far as I can tell we don’t need to support appointments or other directory services (organisation or healthcare service).
I have found some FHIR documentation but this is a bit ambiguous and appears to be referring to the BARS FHIR API (central box in the diagram above).

My question is: where are the API requirements for BARS Receiver documented?

Hi, can you email bookingandreferrals@nhs.net and they should be able to assist, thanks.