Form 100X was efiled with the tax returns. How do I confirm it has in fact efiled along with the file itself. Please confirm. If it has not, should I turn it in singularly? And, if so, what is the address that I must use.
What is a 100X? maybe someone has info that could help. When I see an X, I think its an amended return, but any amended return would have to be Efiled separately, so Im not sure if thats what this is.
