[Konstantinos]

It should be 0.

Is this happening when you want to spawn (by using OnPlayerSpawn)? If so:

pawn Код:

public OnPlayerSpawn(playerid)
{
    SetPlayerInterior(playerid, 0);
    // code..
    return 1;
}

If it's a teleport with a command, set the interior to 0 in the command.