Solved
I clicked the "add another box 12 item" and added a secondary "D" with the larger number. The error check told me this was wrong
Like is one for 21 and one for 20? If you see a 21 or 20 it just means the year. You don't need to enter that part. Anyway you should be able to enter the Code and amount. I don't think it matters if you have 2 lines with the same Code.
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