Can't view trade

[Jawa]

ERROR: This trade has either been completed or you were not one of the two trainers trading.

1. It was just created and thus not declined or completed.
2. I created the trade. >_>

[Unown]

Sometimes, I get that error when I try to complete a trade. It usually happens when I double click it. I get the error message and when I try to complete it, the trade is already completed. This doesn't help answer you problem, does it >.>

[Ice God]

check your trade interest if you have a pokemon marked not for trade then its gonna say error if somebody sends you a trade and the you put the pokemon they want in your party it will say error if you try to complete it

[abhiraj005]

maybe the pokemon you are trading is on your or the other persons roster.