Rejected Return from dependent's SSN "already in use"
My ex-wife filed taxes before I did, and put down my son's information but opted out of claiming him as a dependent. I claimed him as a dependent, correct SSN and all other information, but my return is being rejected because his SSN is already on her return. Her return was accepted and paid out already. I had this issue last year, and got it resolved but it happened again this year. What am i doing wrong?