I am residing in UK for the last 1 year and I am holding a C type Multiple entry Schengen Tourist Visa in my Indian Passport which is valid until 2020. This was issued for France, couple of months before. My spouse is a British citizen and I got this visa as a family member of EU/EEA citizen.
I am having a conference for 3 days (official visit) in Portugal on Feb 2019. The flight ticket, accommodation bookings will be taken care by my office as it will be a group trip. Could someone please let me know I require another Schengen business visa for visiting Portugal for this conference or can I use my existing Schengen tourist visa?
If I could use the Schengen tourist visa, do I need to carry any documents with me when travelling ?