For company documents it depends on your country. For a passport — never.
The route follows the document, not only the country. Corporate documents — an extract from the companies register, the resolution appointing a signatory — take the legalisation route the issuing country is on: apostille for Hague Convention members, consular legalisation otherwise, and neither where a mutual legal assistance treaty exempts documents from legalisation. Identity documents are simply presented; a passport is never apostilled, whatever the country.
The registration act does not decide the legalisation route — the conventions do — but it does decide what arrives. Founding documents are attached to the request in the state language, and every document goes in as its own file: an electronic document, or a PDF scan of a paper original at not less than 200 dots per inch and no more than 10 megabytes. A legalised bundle scanned as one oversized file is the common way a properly apostilled set still fails to upload. (Registration Regulation, Paras. 12, 13 — lex.uz ↗)
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Part of the answer bank — 195 questions, each cited to the article it rests on.