Building a health locker

Can you please share test cases for building a locker for a PHR app.
We currently have our own PHR app, and we now want to create our own health locker and integrate it with the PHR app. In order to go for production access what are the mandatory features we need to have?
Please get back to me at aniksha@ambula.app
@IntegrationSupport

PHR test cases shared on email => aniksha@ambula.app