i think its cause you don't have it on your pokedex so you cant trade or it could also be because you used action replay and hacked it that is was i did was used action replay goot Pokemon then it said that Pokemon can NOT be offered.
sources: myself,friends,familly and Google
i need to know how to trade Pokemon on gts after i put Pokemon the offering Pokemon and the Pokemon i wanted but i still cant trade with the Pokemon
yes
You can't check what Pokemon are up for trade beforehand.
You can to a friend wirelessly but not over GTS it will say on the gts "that Pokemon may not be offered for trade"
Get on GTS.
Yes u can, If u put a Pokemon in GTS You can still seek for Pokemon.
At the GTS in any Pokemon Center.
the global trade station
The Global Trade Station is a place where you can globaly trade Pokemon
GTS means Global Training Station, you can trade Pokemon with other trainers across the world. Of course you must have WFC to trade.
You should trade on the GTS for your Darkrai in Pokemon X because of Meloetta Genesect.
union room or in GTS if u wanna trade globally.