Notes on reading vendor paperwork
How this works, and what happens when it goes wrong. No case studies, because there are no customers yet to write one about.
A confidence score is not a check
A confidence score is the model grading its own homework. The alternative is arithmetic the document already carries, named check by check, including the weakest one.
ReadHow the same vendor invoice reaches you twice
A file check catches the identical file and nothing else. A re-scan defeats it. What actually works is narrower than it looks.
ReadWhen your vendor's invoice total does not match the sum of the line items
A one-cent gap is tax rounded on each line instead of on the subtotal. Anything above two cents is a missing line, a credit line, or freight in the summary box.
ReadWhen the extended amount does not match quantity times unit price
A line discount, a price break or per-thousand pricing all make a line stop multiplying out. None of them is an error, and the check says which one it thinks you are looking at.
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