| Treating Estonian as "Baltic" | Estonian is grouped with Latvian and Lithuanian by geography, but it is Finnic, close to Finnish and not Indo-European. Apply Baltic grammar or terminology and the result is simply wrong. | Native Finnic specialists work from Estonian's own structure — never from a Latvian or Lithuanian template. |
| The letter õ dropped or merged | õ is a separate vowel, not o or ö. Lose it and words — and names — change meaning or diverge from the passport spelling. | Every diacritic (õ, ä, ö, ü, š, ž) is preserved and names are matched character-by-character to the ID. |
| Case-marked names and places | With fourteen cases, a name or place in the source may be declined (Tallinnas, "in Tallinn"). Copied as-is, an authority sees a form that does not match the document. | We recover the base (nominative) form the authority expects and mark cases only where the target language needs them. |
| Inventing a future tense | Estonian has no future tense; it uses the present with time adverbs. Forcing a German or English future can distort deadlines and obligations in a contract. | Time and obligation are rendered with the correct construction, so a deadline reads exactly as intended. |
| Quantity & gradation errors | Estonian distinguishes short, long and overlong sounds and gradates stems (tuba/toa). Miss it and you pick the wrong stem or word form. | Gradation and the three-way length are handled by a native ear, so the right form is chosen every time. |
| Ignoring EU term equivalents | As an EU official language, Estonian already has settled equivalents for official and legal terms. Free-hand renderings diverge from what the authority recognises. | We use the established EU and official terminology, so terms line up with the recognised German or English wording. |
| "vandetõlk" ≠ "authorised translator" | In Estonia a sworn translator (vandetõlk) or notarial certification is used; in Germany it is a court-authorised translator. The systems are not identical. | We clarify in advance where the document applies and set the right form: a certified translation for Germany, or the vandetõlk/notarial route for Estonia. |