Title: Yandex validation error
Last modified: August 30, 2016

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# Yandex validation error

 *  [arcadius](https://wordpress.org/support/users/arcadius/)
 * (@arcadius)
 * [10 years, 10 months ago](https://wordpress.org/support/topic/yandex-validation-error/)
 * [Yandex validator](https://webmaster.yandex.ru/microtest.xml) gives error:
    “
   ОШИБКА: префикс article неизвестен валидатору, укажите его явно атрибутом prefix”..
   which is in English: “ERROR: prefix «article» is not known to validator, specify
   it explicitly with attribute «prefix»”.
 * Issue can be fixed by inserting
    `, 'article' => 'http://ogp.me/ns/article#'`..
   into `get_namespace_urls()` in `seo-ultimate/modules/opengraph/opengraph.php`.
 * [https://wordpress.org/plugins/seo-ultimate/](https://wordpress.org/plugins/seo-ultimate/)

Viewing 1 replies (of 1 total)

 *  Plugin Author [Jeffrey L. Smith](https://wordpress.org/support/users/seo-design-solutions/)
 * (@seo-design-solutions)
 * [10 years, 10 months ago](https://wordpress.org/support/topic/yandex-validation-error/#post-6381718)
 * Thanks, will pass along to development team.
 * All the best,
 * Jeffrey

Viewing 1 replies (of 1 total)

The topic ‘Yandex validation error’ is closed to new replies.

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 * 1 reply
 * 2 participants
 * Last reply from: [Jeffrey L. Smith](https://wordpress.org/support/users/seo-design-solutions/)
 * Last activity: [10 years, 10 months ago](https://wordpress.org/support/topic/yandex-validation-error/#post-6381718)
 * Status: not resolved