| Official romanisation vs. ISO 9 | The name on a Bulgarian passport follows the official 2006 scheme, not scholarly ISO 9. Pick the wrong system and the name diverges from the ID — and the document is rejected. | Names are transliterated by the official scheme and matched exactly to the passport, not converted by a scholarly table. |
| The letter ъ misread as a “hard sign” | In Russian ъ is silent; in Bulgarian it is a full vowel. Treated as Russian, whole words lose a vowel. | ъ is read as the Bulgarian vowel it is, so words and names keep their real sound. |
| Russian cases forced onto Bulgarian | Bulgarian has no noun cases. Reconstruct Russian or German endings and you produce forms no Bulgarian would write. | We write from the analytic structure of Bulgarian — prepositions and word order, not invented endings. |
| Postposed article overlooked | Definiteness sits at the end of the word (-ът/-та/-то). Missed, “a document” and “the document” swap — a real change of meaning in a contract. | The postposed article is set deliberately, so definiteness is rendered correctly. |
| щ read as “sh” instead of “sht” | Bulgarian щ is “sht”. Read as Russian “shch”, names and words are misspelled in Latin. | Bulgarian sound values are applied throughout, so romanised names are correct. |
| Renarrative mood flattened | Bulgarian marks reported vs. witnessed information. In statements and records the mood decides whether something is asserted or merely relayed. | The evidential distinction is preserved, so reported content is not turned into fact. |
| Patronymic misread as a middle name | Bulgarian names carry a father-based middle name. Treated as a second given name, the record no longer matches the passport. | The patronymic is kept in its role and matched to the ID, so the name is accepted without a query. |