I have submitted the DIN application form on the MCA Portal, but forgot to save/ print the same. What should I do?

You need to go to the 'Get DIN Application' link available under the 'Director Identification Number' link on the home page of the MCA portal. You can download a copy of your DIN application form by mentioning the Provisional DIN (if available), name and date of birth of the director. This form will be equivalent to the form you obtained when you submitted the original DIN application.