We recommend you to log in to your Subscription Management Portal (SMP) and then change your TPIN from there.
Here are the steps:
Step 1: Login to your SMP
Step 2: Goto Profile >> TPIN
Step 3: Request new TPIN if you so desire
And it's done! Please note that Tradeplus will reset your TPIN once in 3 months to ensure added security. You shall be notified about your change in TPIN and can also view the TPIN a shown above.
*We advise you to keep your TPIN confidential to prevent misuse during order placing.