| The vigesimal number system | Danish number words count in twenties: halvtreds = 50, tres = 60, halvfjerds = 70, firs = 80, halvfems = 90. "Read along" as in German and you miscalculate — on a cheque, contract or certificate a factual, not a stylistic, error. | Written-out amounts and number words are cross-checked against the figures and set unambiguously. |
| Æ, Ø, Å and the Aa spelling | The special letters æ, ø, å stand at the end of the alphabet (after z) and must not be freely resolved to ae/oe/aa; historically "aa" survives in names like Aabenraa or Aalborg. Wrongly transliterated, the name on the certificate no longer matches. | Special characters, Aa/Å spelling and sorting are reproduced faithfully, not "Germanised". |
| The postposed definite article | Danish attaches the definite article: et hus → huset (the house), en bil → bilen. Treat it as a separate word, or double it, and you produce wrong forms. | Definiteness and gender are built by Danish grammar — as a suffix, not a preceding word. |
| Gender en/et (fælleskøn/intetkøn) | Danish has two genders, the common (en) and the neuter (et). The wrong gender changes article ending and adjective (et stort hus vs. en stor bil) and any native speaker notices. | Every noun is carried with the correct gender; the verified terminology fixes en-/et- assignments. |
| False friends DE⇄DA | gift means married as well as poison, rar is kind (not rare), frisk healthy/lively, øl beer, vindue is a window. One word flips the statement. | Native specialists translate the meaning, not the resemblance; critical terms are locked in the terminology. |
| Danish ≠ Norwegian/Swedish | Bokmål grew out of Danish and looks similar — but is a different language; rolig is calm in Danish, funny in Swedish. A "Scandinavian" blanket translation hits none of the target markets right. | The target language is clarified unambiguously; only a native Danish specialist translates. |
| CPR number, date & name formats | The Danish CPR number (format DDMMYY-XXXX), date and address formats appear in fixed form on certificates. "Localised" or reformatted, the document diverges from the original and is queried. | Personal ID numbers, dates and names are taken verbatim from the original and the layout reproduced. |