| Reading conjunct letters wrong | Conjuncts such as ক্ষ (kṣa) or জ্ঞ (jña) fuse consonants into a single glyph whose sound is not obvious from the parts. A non-native reader mis-decomposes them and mis-spells the word or name. | Native specialists read the conjuncts correctly and resolve each to the right sound before anything is romanised or translated. |
| Romanisation of names to Latin | Bengali has no fixed 1:1 romanisation — ISO 15919 and the passport spelling often diverge, and aspirated vs unaspirated (ভ/bh vs ব/b) is easily lost, so the name drifts from the ID. | Names are romanised by the rules and then matched exactly to the passport spelling, aspiration included — never improvised by sound. |
| Bangladesh vs West Bengal (India) | The standard written language is shared, but vocabulary, usage and — crucially — the issuing authorities differ. Treat a Bangladeshi document like an Indian one and the certification route is wrong. | We establish the country of origin and destination first, then apply the terminology and certification path that fits Bangladesh or India. |
| Sadhu vs Cholito register | Older official documents may be in the literary সাধু (Sadhu) register, modern ones in চলিত (Cholito). Mixing them, or misreading archaic verb forms, distorts the tone and meaning of a certificate. | The register is identified and handled correctly, so an archaic source is rendered faithfully without importing errors. |
| Bengali numerals & dates | Dates and reference numbers often appear in Bengali digits (০১২৩) and sometimes the Bengali calendar. Read as Latin numbers, a date or file number can silently change. | Bengali numerals are transcribed exactly and dates are converted with the calendar checked, so nothing shifts on the certificate. |
| Bengali ≠ Devanagari / Assamese | Bengali is often lumped in with Hindi's Devanagari. Apply the wrong script logic and you get wrong characters; Assamese looks near-identical but is a separate norm. | We use the Bengali (Eastern-Nagari) script only and keep it cleanly apart from Devanagari and Assamese. |
| "Notary attestation" ≠ "certified translation" | In Bangladesh and India documents run through a notary public / SDM and a foreign ministry; 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 notary/apostille route for Bangladesh or India. |