Both Teams are Full error
An error in Counter-Strike: Source and Counter-Strike: Global Offensive. The game cannot find an available spawn point, either because you forgot to place them, or because those you placed are invalid.
You need to have both
info_player_terrorist entities in the map, or the game will not be set up correctly. See Counter-Strike: Source Level Creation or Counter-Strike: Global Offensive Level Creation for information on the necessary entities.
If both spawn points has been placed, check the console. If it reports that your spawn points are invalid, the problem is usually that your spawn point entities are intersecting another surface in the map (usually the ground). (Unlike HL2SP and HL2DM spawn point entities, CS:S spawn point entities will intersect the ground if not placed a couple of units above it.) Try moving the entities up a little bit to make sure that they are not intersecting with anything.