Terry Heley from Microsoft has a must see video if you are using Dynamics GP for Affordable Care Act. As she says – "There were MANY changes in the year end update for ACA, so if you are going to track ACA in our system, it is MANDATORY"
https://www.youtube.com/watch?feature=player_embedded&v=gAeLUjozhUA
See this post for more details - Microsoft Dynamics GP Year-End Release 2015: Affordable Care Act (ACA)
Click HERE for the latest ACA documentation for the 2015 year and all changes in the update in detail.