Think I found my answer in this thread here: https://ttlc.intuit.com/community/after-you-file/discussion/e-file-was-rejected-because-of-duplicate...
My guess is the amount and payor are being used to create a primary key, and so when there are two from the same payor with the same amount, it sees it as a duplicate. Here's a thought... ADD THE RECIPIENT IN THERE AS WELL FOR PART OF THE PRIMARY KEY.
Funny, it didn't happen last year, though.
In the link pasted above, the solution is to add $0.01 to one of the 1099's to prevent the two similar forms from being seen as identical.
