As per exchange guidelines, PAN modification in an existing trading account is not permitted.

PAN is treated as a unique client identifier in the exchange system.

Therefore:

• PAN cannot be modified in the existing trading account.
• If any client obtains a new PAN, the following process must be followed:
  • The existing trading account must be closed.
  • A new trading account must be opened with the new PAN.
• After account closure, holdings may be transferred to the new account through the closure-cum-transfer process.