I forgot to remove my elder son, who started earning since last year, from our joint filing as our dependent, and the filing was accepted. When my elder son started to file his tax record, it was rejected, and an error was raised: 'The electronic tax return was rejected because a dependent's social security number (SSN) is used on another return.' My son would like to file his tax return before this extended due date (Nov 2023). I appreciate your assistance with this request.
