Laws and sections by number or title, due dates, pages, and updates.
The Exchange conducts a mock trading session in the Currency Derivatives segment on November 14, 2026, to test the new NEAT 3.5.5 software version. Members must install the new version from the NSE Extranet. The session includes two trading periods from the primary and disaster recovery sites. NNF members must migrate to the new encryption mechanism by December 07, 2026. All outstanding orders clear before each session. Trades during the mock session do not result in fund pay-in or pay-out. Members must participate to ensure connectivity for the live environment.
What you must do
Key dates
Who is affected
Exceptions
If you do not comply
Ask about this circular
| Download Ref No: NSE/CD/77414 | Date: November 13, 2026 |
|---|---|
| Circular Ref. No: 47/2026 |
All Members,
Mock trading on Saturday, November 14, 2026 - New version of NEAT 3.5.5
In continuation of circular (download no. 71999) dated December 24, 2025, Exchange will be conducting a mock trading session in the Currency Derivatives Segment as per the following schedule:
| Mock Date: November 14, 2026 | |
|---|---|
| Particulars | Time in Hrs |
| Trading Session-1 from Primary Site | |
| Normal Market open time | 09:00 |
| Contingency Start time | 10:00 |
| Contingency End time | 11:00 |
| Normal Market close time | 11:30 |
| Trading Session-2 from DR Site | - |
| Normal Market open time | 12:15 |
| Normal Market close time | 14:30 |
| Trade Modification end time | 14:40 |
| Re-login Timings | |
| Live Re-login start time | 16:00 |
| Live Re-login close time | 16:30 |
Members are required to take note of the below important points :
| Version | Availability | Download Path on NSE Extranet: |
|---|---|---|
| NEAT 3.5.5 | From November 13, 2026, 18:00 hrs | /cdsftp/cdscommon/NEATCDS355 |
| Version | Release Date | Discontinuation date |
|---|---|---|
| 3.5.4 | From October 03, 2025 | December 05, 2026 (mock) |
| 3.5.5 Recommended | From November 13, 2026 | - |
| Segment | Gateway Router | Gateway IPs Subnet ranges | |||
|---|---|---|---|---|---|
| IP Address | New Port | Network | Mask | Port | |
| CD | 172.19.18.85 | 10889* | 172.19.18.0 | 255.255.255.128 | 10870 & 10871 |
| 10891** | |||||
*Port – This port will support new encryption messages with MD5 checksum removal. **Port - This port will support new encryption messages with MD5 checksum removal and new immediate Ack request for order related messages.
For other important instructions regarding the mock trading, kindly refer to the following Annexure:
Annexure 1: Important instructions regarding mock trading session. Annexure 2: Pre-requisites / General guidelines for participating in the Mock environment. Annexure 3: Important guidelines in case of switchover of trading system to Disaster Recovery (DR) Site.
For and on behalf of National Stock Exchange of India Limited
Khushal Shah Associate Vice President
| Toll Free No | Email id |
|---|---|
| 1800-266-0050 (Option1) | msm@nse.co.in |
| Particulars | Details |
|---|---|
| Connectivity Parameters: | Refer to circular NSE/MSD/74511 dated June 02, 2026 & NSE/MSD/73993 dated April 30, 2026 for interactive connectivity details. |
| Installation Guide: | Available on NSE Extranet at /cdsftp/cdscommon/Installation_Procedure. |
| NEAT Version: | NEAT 3.5.4 & 3.5.5 |
| Order Purge: | All outstanding orders will be cleared before each session. Members using NNF software must manually clear orders in their systems. |
| Software Testing: | Refer to circular NSE/MSD/46441 and SEBI circular SEBI/HO/MRD1/DSAP/CIR/P/2020/234. Members may use either Mock Trading or Simulated Environment to meet regulatory requirements. |
| No Financial Obligation: | Trades during mock sessions will not result in any fund pay-in or pay-out. |
| UCC/PAN Validity: | With reference to Exchange circular NSE/ISC/51754 dated March 24, 2022 and NSE/ISC/52722 dated June 23, 2022 issued by Investor Services Cell and updated from time to time : |
| • Only valid and compliant UCC/PAN uploaded and approved before cutoff will be allowed. | |
| • For queries, contact uci@nse.co.in. | |
| UCC Validation will be skipped during contingency time for order entry. | |
| Extranet / Member portal availability | Connect2NSE and Extranet facility shall not be available from 19:00 hours to 22:00 hours. |
| Extranet API shall not be available from 19:00 to 22:00 hours. | |
| NOTIS Availability: | The NOTIS application will be accessible during the mock trading Session. |
| Participation: | Members should participate using all trading software and re-login into live environment to ensure smooth connectivity for Monday, November 16, 2026. |
| Live Updates: | Visit www.nseindia.com for any session-related updates. |
| Support: | For queries, call Toll-Free: 1800 266 0050 (Option 1). |
| Pre-requisites / General guidelines Heads | Details |
|---|---|
| Eligibility | All members enabled for trading in the Currency Derivatives (CD) segment in the live market are automatically eligible for mock trading. |
| Participation is enabled using existing User IDs, IPs, and Box ID mappings from the live environment. | |
| Telnet Connectivity | Ensure you can successfully telnet the Exchange host from the IP address you intend to use. |
| Box ID Setup | Confirm that the Box ID is created on the IP with appropriate messages for the segment you wish to trade in. |
| NNF Application Users | If using Non-NEAT Frontend (NNF): |
| a) User ID must be of dealer type. | |
| b) It must be converted for NNF. | |
| C) It must be mapped with the IP. | |
| Branch/User Limits | Set appropriate branch and user limits from the Corporate Manager Terminal before placing orders in the mock session. |
| Exchange Requests for Mock Participation | Send email requests for the following actions with User ID and segment details: |
a) Pro Enablement b) CTCL Conversion (only dealer IDs) c) Password Reset for Corporate Manager User ID d) Unlocking of Corporate Manager User ID e) Change of Trading Rights (e.g., PRO to CLI, PRO+CLI) | | Password Management | Corporate Manager User ID: Exchange will assist with reset/unlock via email. Other User IDs: Members must reset/unlock these themselves using the Corporate Manager Terminal. |
