I have deployed my application as a BTF in a webcenter portal. In that i have added a page and has placed my aap as a BTF region. Now from that page in portal i have removed the form tag and has added a <af:form> tag in all of my JSFF pages with different IDs. I am doing this because of some triggers and PPRs needed to refresh my page. As ADF allows <af:form> tag to be present in the fragment so i don't see anything wrong in this approach.