Speak with the product manager to prioritize the compliance-related activities high enough in the backlog to submit a prototype to the regulatory body.

Identify the missing requirements, prioritize the missing compliance work directly into the backlog, and assign the work to the team.

Reschedule the launch of the product until the team can produce a prototype for inspection as required by the compliance team.

Create an MVP that contains the scope for the prototype and that will be prioritized with the compliance team.