EWS — Recruitment in Bank of India

I have been selected under the EWS category for the post of clerk in Bank of India. I have made my EWS certificate in July, 2020. Nothing was mentioned in the notification of IBPS regarding the date of issue or validity year of the certificate. Banks like UCO, BOB, PNB have already completed their recruitment process and joining has been given to the persons with latest EWS certificate valid for the year 2020-21. But BOI is not accepting this. They are asking to bring the certificate valid for the year 2019-20. All banks are recruiting via the same exam conducted by IBPS but till now only BOI is not accepting this. IBPS is not ready to take any responsibility. All over India lot of candidates are facing this issue. Please let us know whether the rule for different organisations is different when the primary recruitment procedure and criteria is same for all the banks. Different organisations like UPSC, CWC also have allowed candidates with latest certificates this year. As these are public sector banks so we are asking the same to be accepted. Please take a look into the matter.