As clients go I have a client whose wife is from South Africa and two of his childrens were born there as well, they had a ITIN number and now they finally got new SS numbers. The 2019 return was already filed and when I tried to amended since the wife's number changes it wont let me fill out the 1040-X

I was told to file a new returned but since the husband SS is correct I would think that it will be treated as duplicate.

Anyone has corrected the SS after a return is filed?? please help no one else to call in this crazy world

Thank you