Laws and sections by number or title, due dates, pages, and updates.
The National Stock Exchange of India introduces additional pre-trade risk control validations for NNF ID and Algo ID combinations. The Exchange rejects orders that fail these specific validation criteria. Members must ensure their order messages comply with the new NNF ID and Algo ID mapping requirements. The Exchange sends an order rejection message to the NNF user when a mismatch occurs. Members should consult the NNF API protocol version 3.6 for specific error codes and messages. These changes apply to all members trading in the commodity derivatives segment.
What you must do
Key dates
Who is affected
If you do not comply
Ask about this circular
| Department: COMMODITY DERIVATIVES | |
|---|---|
| Download Ref No: NSE/COM/77215 | Date: October 30, 2026 |
| Circular Ref. No: 67/2026 |
All Members,
Pre-Trade risk controls - Pre-emptive order cancellation on account of NNF ID-Algo ID validations - Update
This is in partial modification to item no. 1.8 F regarding Pre-emptive order cancellation on account of NNF ID-Algo ID validations, of Exchange consolidated circular NSE/COM/73930 dated April 28, 2026.
Members are requested to note below additional validations between NNF Id and Algo Id and in case of mismatch, Exchange shall reject such orders:
The identification of 12 digits and 13^th digit of NNF ID are explained in Exchange circular NSE/INVG/73992 dated April 30, 2026.
Members are requested to refer NNF API protocol (COM version 3.6) for the details of the NNF error code and error message. (website link: https://www.nseindia.com/trade/platform-services-neat-trading-system-protocols )
The circular shall be effective from November 23, 2026.
For and on behalf of
National Stock Exchange of India Limited
Khushal Shah
Associate Vice President
| Toll Free No | Email id |
|---|---|
| 1800-266-0050 (Option 1) | msm@nse.co.in |
