Some players haven’t realized that certain missions are only available when playing as certain characters. This has most commonly been reported around Surveying the Score, Bury the Hatchet, and Deep Inside. It may happen elsewhere too. Try playing as all three characters for a while to see if the mission opens up. In some cases, missions will only appear after a certain amount of in-game time, so also try doing other activities for a while. Some missions are triggered by phone calls and those might not arrive when you are in certain locations, so be sure to not stay in the same spot if you are waiting for a call. We recommend consulting a guide such as the Brady Guide