We faced a similar situation before the Department went online. I do not know if you engaged a consultant for such statutory activities, which might be the cause of such an error. The problem was from our side. We filed a supplementary annual return with Form 3A for the error that occurred nearly 3 years ago, and the concerned member successfully claimed the fund post-resignation. Definitely, the error can be reversed. It is better to be vigilant when filing the monthly returns/remittance, during which time we add/delete staff names to avoid such issues, which are very cumbersome apart from facing the wrath of the concerned employee.
Regards,
K. Anand