As per this article, https://economictimes.indiatimes.com/news/economy/policy/i-t-department-asks-financial-institutions-to-get-accounts-self-certified-by-april-30/articleshow/58126531.cms
All NRE account holder have to self certify their accounts. I am an NRE account holder with my account opened in February 2015, where I had submitted my passport and visa details. What do they mean self certification and what would the documents that would be required and do I have to get it done again since I have already submitted my documents while opening the account ?