Error in log

[neo-13]

Good morning,
when I enable my strategy, I have this error message in my log:
Default;Error validating request:-'xc' : cause - The symbol or the local-symbol or the security id must be entered ServerValidateError;

I don't understand this message (what is the error), could you explain me that I must to do please ?

Thank's a lot for your answer.

[NinjaTrader_Bertrand]

neo, from our experience this TWS API error message can be normally ignored. You see this with NT7 R13 and the TWS 927, correct?

[neo-13]

It's not exactly (I think), but I remember I had allready this message and NT worked correctly.
However I have a strategy which don't work and I don't understand why.
Before this strategy worked but after a few time, the other strategies had a yellow background color because they waited the synchronisation I believe.
Your technical service answered me and send me a answer (go tool/option/strategy/ntscript etc and check immediatly...) And since my strategy never open an order.
Now I disabled all strategy and use only one and dosen't work always.
Could you explain me the setting which are good for strategy work please?
I have many strategy and I want all the strategy can open order in the same time, not wait the first close for an other can open an order.

Thank's a lot.

[NinjaTrader_Bertrand]

Thanks for the reply, the strategies generally can always open an order > depending solely on the fact when your conditions trigger to do so. However which starting up setting are chosen impact how your account would replicate those orders given - all scenarios you could encounter are explained and documented here with the settings available > http://www.ninjatrader.com/support/h..._positions.htm I suggest to give that a close review.

[neo-13]

Sorry but my english is not perfect and I'm not sure to understand well the explanations.
In the same time I have diffilculties to understant is so difficult to start a strategy and work normaly with it.
I think, I check enable and that all!!
For more explanation abour my problem, I can say you, when my strategy worked and had open positions, I had closed it manually and choosen "flatten everything".

Thank's for your answer