Does a character need to complete missions before heists in gta online?

Grand Theft Auto Online is an open‑world multiplayer component of Grand Theft Auto V, allowing players to roam and engage in various activities. The Wikipedia entry summarises the game's release dates, platform availability, and general gameplay mechanics, but it does not describe the progression requirements for missions or heists. Consequently, there is no evidence in the cited source that completing missions is a prerequisite for undertaking heists. Players who wish to know the exact relationship between missions and heists should consult official Rockstar documentation or community guides, as that information is not covered here.