Assault
"as_bomb" - REQUIRED - bomb spawns here (team-specific, can be neutral)
"as_goal" - REQUIRED - plant bomb here (team-specific, can't be neutral)
"as_res_zone" - respawn zone (influencer) which is active when your team's bomb is not planted
"as_res_zone_away" - respawn zone (influencer) which is active when your team's bomb is planted
Note that you CANNOT plant a bomb on the as_goal object if the team that owns that goal is not active in the game (has at least one player).
you need to have at least one placed on the map to avoid the "map and gametype incompatible" message; but note that you might actually need more than one or need to set them for specific teams in order for the gametype to actually work

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Source:Bungie.net