A person worked in a company for 7 years. When he left company and try to transfer his PF balance in his current company he found that his previous company neither put his joining date nor put his leaving date. Now he request many times to his previous employer to put joining date, but they didn't take any steps. The person have his joining letter from the company. Now please suggest how to put his D.O.J. in the portal without employer. Is it acceptable joint declaration supporting with joining letter?