I have a client whose husband passed away in April of 2021.  Although I filed her single for the 2022 return (no small children at home) she qualified for the filing status of qualifying surviving spouse this year because her 34 yo son moved back home (alcoholic and in and out of rehabs) He is not listed as a dependent on her return.  He has essentially lived with her all year and she has supported him.  I’ve already filed her return noting the son’s name and SS# on her return.  I wanted to file for him (freefile thru IRS) so he could get his withholding back (or mom could lol).  The son’s return was rejected because the mother’s return was filed first and the IRS is recognizing the sons SS# from the mothers return. (Stated by the rejection notice)  Am I doing something wrong?  Is there any way to bypass the system to get the son’s return accepted via efiling?  I’d really appreciate your direction in this matter.

Thank you very much for your time!!!