Mock Trading Session in SLBM Segment
NSE circular NSE/SLBS/74790 · 19 Jun 2026
Official title
Mock trading on Saturday, June 20, 2026 - No new version release
Official record
Open source pageSummary
Check the official recordWhat changed
The National Stock Exchange of India Limited conducts a mock trading session in the Securities Lending and Borrowing Market on June 20, 2026. The normal market opens at 14:00 and closes at 15:00. Members must participate to ensure connectivity for the live environment. Trades during this session do not result in fund pay-in or pay-out. All outstanding orders clear before the session. Members must use the existing User IDs, IPs, and Box ID mappings. Members using NNF software must manually clear orders in their systems. The Exchange requires members to re-login to the live environment between 18:30 and 19:00 on the same day.
What you must do
- Participate in the mock trading session.
- Re-login to the live environment between 18:30 and 19:00.
- Manually clear outstanding orders if using NNF software.
Key dates
Document text
National Stock Exchange of India Limited
Circular
| Department: SECURITIES LENDING AND BORROWING MARKET | |
| Download Ref No: NSE/SLBS/74790 | Date: June 19, 2026 |
| Circular Ref. No: 17/2026 | |
All Members,
Mock trading on Saturday, June 20, 2026 – No new version release
Exchange will be conducting a mock trading session in the SLBM on Saturday, June 20, 2026 as per the following schedule:
| Mock Date: June 20, 2026 | |
|---|---|
| Particulars | Time in Hrs |
| Trading Session from Primary Site | - |
| Normal Market open time | 14:00 |
| Normal Market close time | 15:00 |
| Relogin Timings | - |
| Live Re-login start time | 18:30 |
| Live Re-login close time | 19:00 |
Members are requested to refer to circular no. NSE/MSD/74511 dated June 02, 2026 regarding new CA certificate and NSE/MSD/74559 dated June 05, 2026 for new version of Neat Adapter EXE application. Accordingly, members are requested to use the combination of new NEAT adapter version and new ports applicable for SLBM segment as below:
| Login through | Dates | Applicable GR PORT |
|---|---|---|
| New NEAT Adapter application Version 1.0.28 for Windows Neat Adapter Version 1.0.28 for Linux Neat Adapter | Mandatory from July 06, 2026 (mock) | 10889 |
Members using Direct connection through NNF users, are requested to download and use the new CA certificate is available in Extranet path ( /slbftp/slbcommon/Encryption_CA_Certificate/2026_Certificate ). Accordingly, members shall ensure readiness of their migration plan by July 06, 2026. The applicable new interactive parameters to be used with ‘New CA certificate’:
| Segment | Gateway Router | Gateway IPs Subnet ranges | |||
|---|---|---|---|---|---|
| IP Address | New Port | Network | Mask | Port | |
| Securities Lending & Borrowing (SLBM) | 172.19.14.85 | 10889 | 172.19.14.0 | 255.255.255.128 | 10860 |
*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.
For and on behalf of
National Stock Exchange of India Limited
Aarti Surve
Chief Manager
| Toll Free No | Email id |
|---|---|
| 1800-266-00-50 (Option 1) | msm@nse.co.in |
Annexure – 1
Important Instructions regarding mock trading
| Particulars | Details |
|---|---|
| Connectivity Parameters: | Refer to circular NSE/MSD/73993 dated April 30, 2026 for interactive connectivity details. |
| Installation Guide: | Available on NSE Extranet at /slbftp/slbcommon/Installation_Procedure. |
| NEAT Version: | NEAT 1.3.3 |
| 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. |
| NOTIS Availability: | The NOTIS application will be accessible during the mock session. |
| Participation: | Members should participate using all trading software and re-login into live environment to ensure smooth connectivity for Monday, June 22, 2026. |
| Live Updates: | Visit www.nseindia.com for any session-related updates. |
| Support: | For queries, call Toll-Free: 1800 266 0050 (Option 1). |
Annexure 2
Pre-requisites / General guidelines for participating in the Mock environment
| Pre-requisites / General guidelines Heads | Details |
|---|---|
| Eligibility | All members enabled for trading in the SLBM 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. |
Source details
- Source
- National Stock Exchange of India
- Type
- circular
- Published by source
- 19 Jun 2026
- Document number
- NSE/SLBS/74790
- Issuing division
- SECURITIES LENDING AND BORROWING MARKET
- Coverage area
- securities