Registration letter lost

Don't worry. You can send email request to issue duplicate registration letter. Contact e-sahaayataa.

https://help.icai.org/

Hey Karishma,
You can print any number of your registration letter from the ICAI website.

just copy this link in your address bar. I have attached a screenshot of this link.

https://220.225.242.179/REprintletter/reprint.aspx

Note: In order to download the registration letter you need to have your registration number.

Try

https://112.133.194.253/REprintletter/reprint.aspx