In this guide
  1. Inventory the language versions that really exist
  2. Test the destination after switching language
  3. Localize the purchasing conditions
  4. Example: pricing is updated in only one language
  5. Separate language experience from market eligibility
  6. Connect language-level evidence to inspection

Inventory the language versions that really exist

Map original and translated pages and record whether each body is complete and public. Do not count an untranslated copy as a completed language version. Decide how navigation behaves when a counterpart does not exist, so a language switch does not silently mislead readers.

Test the destination after switching language

Check that switching from a product guide reaches its intended counterpart, not an unrelated comparison or retired URL. Record the source when a route is wrong. A crawl can find candidates, while a human walkthrough of representative paths clarifies the actual navigation failure.

Localize the purchasing conditions

Do not infer currency, market availability or product-language support from the language of an article. A translated explanation does not establish that the product interface or output supports the same language. Affiliate eligibility also needs its own market check rather than an assumption based on locale.

Example: pricing is updated in only one language

If a source guide changes subscription conditions while its English counterpart retains old terms, readers can make different purchasing decisions. Include changed fields and counterpart URLs in the update request. Where verification is incomplete, handle that uncertainty clearly instead of presenting stale conditions as newly checked. Inspect decision-relevant substance as well as the URL mapping between languages.

Separate language experience from market eligibility

An English-language reader does not necessarily live in one country, and Japanese content does not establish service availability. Separate product-language support, commercial availability and affiliate market conditions. Review whether a reader can make a valid decision, not only whether the translation reads naturally. When retaining a source price, preserve currency and billing-period context. Treat region eligibility as its own check rather than a fact inferred from the locale of a page.

Connect language-level evidence to inspection

Review relevant language-page groups with appropriate country and query context. Low traffic is a reason to investigate publication, substance and navigation, not an automatic instruction to delete a locale. Keep a record of whether a source-page change has been reflected in its translations.

Official sources

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