The server is returning the wrong LotAmount when using the Download script to update the AssetList parameters. What they are returning is the new minimum trade size. We are able to trade the smaller trade size if we can send an order with an amount using 1 decimal place.
I tried in real several asset file and I received Lot warnings or picost warnings. Nothing regarding margin. Trades are 10 times bigger than expected i.e. with only one losing trade you can vaporize your account. I Have been lucky because my trade was positive and I manually close it. I imagine what could happen with people trading Zx systems with Oanda... I wrote to Oanda support, Zorro support and several post on this forum regarding the issue because I guess it should be addressed as priority one.
Well I guess this explains why Z12 opens such huge index positions. I thought it was just due to the accumulate setting since the account has such low capital. It's actually up now compared to before the recent correction, but the drawdown was pretty nasty since it held a bunch of long index positions as it happened. Definitely could have blown up some accounts with tighter capital though and I'll pause this for now.
The Zorro window prints Long 1 for SPX500, Oanda receives this as one whole SPX500 contract, instead of 1 LotAmount, which is 0.1
Can this not be fixed with an update to the Oanda plugin?
I have a question out to their support for a couple days now about the fact that when a request is made about Lot Amount and Pip Cost, it is pushing back the incorrect values as discussed previously based upon the actual execution behavior. I updated the AssetList and using the Set_Patch broker command to use my values for the Lot size as being 1 rather than 0.1 and adjusting the Pip Cost 10 times higher. Will see how that works out. Will report back when I hear something from Oanda.
This is with the Oanda plugin directly. I do not know the behavior for MT4 nor MT5.
If the issue is with the Zorro Oanda plugin, then their support will be very confused. You mentioned in your first post that Oanda made this change from LotAmount 1 to 0.1 not too long ago, is it possible that this capability simply wasn't updated in the Oanda plugin?