FNO stocks can be moved to the Short Term ASM framework (circular link). There is a thread explaining about this -
These stocks were moved to Stage 1 of the Short Term ASM framework (yesterday’s circular link for reference), hence the minimum margin requirement has shot up to 50% for them. Therefore, a maximum of 2x leverage can be given for such stocks.
Will follow up with the team and get the above support article updated with this information.
Note - As you referred to the FAQ (Page 3), FNO stocks can’t be moved to the Long Term ASM Framework. Also, if its a non-FNO scrip and its added to ASM framework (irrespective of it being Long Term or Short Term), we won’t allow MIS in it.