DIN or Directors Identification Number, is required for all directors. It functions similarly to a directors identity proof. DIN is assigned through a simple procedure that involves filling out forms and submitting them along with the necessary documents and fees to the MCA Portal. Once the application fee is paid and the application is submitted, the system will generate an application number. Central Government will process the application and decide the approval/ rejection.
If the DIN application is approved, the central government will communicate the DIN to the applicant within 1 month.
If the DIN application is rejected, it will e-mail the reason for rejection to the applicant and will also put the reason on the website.
 The applicant will get 15 days to rectify the reason. If he rectifies such reasons and is able to satisfy the central government, he will be allotted DIN otherwise central government will label the application INVALID.
 once a person is appointed as a director in any company as per the Companies Act 2013, he cannot relinquish his DIN in the future. Even if he doesnt remain a director anymore in that company or in any other company, his DIN will exist as it is.