Don't start active trading with ZERODHA in commodities...just test it for some months then only trade with them.....
I just test started with them...I put one buy order asGTC..on 20th ..then next day I saw that order not filled when price came there...I checked pending order window ..that order is there but not filled ..only diference is now status showing server not ready...I tryed to cancell that order ..but failed...Then one person called me from zerodha and said some problem is there in server and told your order cancelled from exchange ...but that order still thare in pending order window and that order blocked my margin too...if that order filled then I might in profit now
So beware ...till this post they not solved that problem...numbers of mails sent ...they called me...but still...................................