Yandex: vocabulary plus service requirements
A separate validator and feature-specific interpretation of markup.
Check the consumer’s requirements
Yandex documents structured markup for several services and content categories. Its structured-data validator checks recognized markup and requirements used by its services. Correct Schema.org syntax alone does not establish that a service can use the data.
Read the category guidance
Yandex’s guides cover areas such as products, recipes, software, organizations and media. Use the guide relevant to the page rather than borrowing Google’s property requirements.
Use this as further reading
CheckMySchema’s Yandex content is reference guidance. It does not run Yandex service-specific checks or promise a particular snippet. Follow up in Yandex Webmaster when Yandex visibility is important to your site.
Go deeper with the official sources
Yandex Schema.org overviewYandex structured-data validatorThis is an original explanatory guide, not an official search-engine document. Requirements can change. Follow the linked sources for full, current details.