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Gossip entry from Gossip_menu.MenuId this option is associated with. If this is the default gossip option for the selected NPC, verify that the NPC has this value in it's creature_template.gossip_menu_id .
OptionIndex
The OptionIndex associated with this gossip_menu_option. Must be unique for a given gossip_menu_option.OptionIndex starting from 0 (zero).
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Gossip entry from Gossip_menu.MenuId this option will link to. Opens Gossip with with id specified here.
ActionPoiId
Poi id from points_of_interest.ID this option is associated with.
If not 0 will show POI on Map.