OpenCart installs with English as the default language. For the Ukrainian market full localisation is required: not just interface translation, but correct configuration of the hryvnia currency, Ukrainian regions and cities, date formats and phone numbers.
We perform full Ukrainisation of OpenCart and ocStore: installing the uk-ua language pack, setting Ukrainian as the default, translating system email templates and configuring SEO URLs for Ukrainian-language content.
If a two-language store is needed (Ukrainian + English or other) — we configure multilingual mode with a switcher in the site header. Separate meta tags, descriptions and URLs for each language.