It's not intuitive but, to make it pass the review, for the transactions that had no gain (meaning a loss or sold at face value), I had to enter the proceeds as being $0. I assume this is because the number they're trying to match is after the gross value of the proceeds for items sold for no gain is subtracted from the total proceeds amount on the 1099-K form. I would have expected each transaction to be entered with its actual proceeds amount and the program would have ensured the proceeds of those sold for no gain equaled the gross amount entered.
