If you would like to add own map/maps in FCAV database, doesn't matter SP or MP, you needed:

1)Join our Discord Far Cry 1 Basic Community: DISCORD FAR CRY 1

2)Type here with request to add your map: 📁│𝗚𝗔𝗠𝗘-𝗠𝗔𝗣𝗦🗻 (link from discord server) 

3)Add there map and select on it following tag:
"Request FCAV DB"
4)After that moderation will review the map for quality, and subsequently decide whether to add the map.