Use the Validator to check your Yandex partner program XML export files against XSD schemas.
This tool makes it easy to debug export files and expedites the process of exporting your data to our partner program databases.
You can check the validation of your XML files both against our standard partner program schemas and your own schemas by selecting the "other schemas" option in the list validation schemas.
We strongly recommend that you validate your file before sending it to Yandex each time you create a new export file or amend one.