The chequebooks and passbooks of some public sector banks, which are set to be merged, will become invalid from April 1. These banks are those whose mergers with other banks took effect from April 1, 2019, and April 1, 2020. The names of these banks are Dena Bank, Vijaya Bank, Corporation Bank, Andhra Bank, Oriental Bank of Commerce, United Bank and Allahabad Bank.
If you are a customer of any of the merged banks, then update the details like your mobile number, address, nominee, etc.