When an order is triggered, my Jornal shows this.

 
Wslwilson:
2013.02.07 21:00:03 '2088220729': order sell limit 0.20 EURUSD opening at 1.35603 sl: 1.35777 tp: 1.30429 failed [Invalid S/L or T/P]

Read this:  ECN

And this:   Requirements and Limitations in Making Trades

Reason: