What are the limitations of character transfer between gta modes?

The only verified information in the source pertains to Grand Theft Auto Online as an online multiplayer component of Grand Theft Auto V. It describes the game’s release dates, platform availability, and basic gameplay features such as an open world and support for up to 30 players. There is no mention of character transfer between the single‑player version of GTA V and the online mode. Consequently, based on the evidence supplied, no conclusions can be drawn about the existence, functionality, or limitations of character transfer between these modes.