01/02/2026 is the 1st of February in London and the 2nd of January in New York. 1.234,56 is a European thousand-and-decimals. Guessing either wrong would corrupt every financial number downstream — so the product never guesses. When a file is ambiguous, inspection stops and asks.
Date format
You are shown real sample dates from your own file and asked once: Day/Month or Month/Day. If unsure, check one order you remember placing. ISO dates (2026-02-01) never need confirmation.
Decimal separator
Same principle: if your numbers could read two ways, you confirm . or , once. A wrong decimal convention is the classic cause of costs silently becoming zero in other tools.
Trying to run the analysis with a confirmation still pending shows “confirmation required” — scroll to the highlighted file card and answer the question, then run again.