The certificate is valid for one year from the day of successfully passing the test.
The certificate is linked to your username in Yandex.Direct. When changing your place of work, you must delete your representative username from the list of company representatives in order to make it a representative in your new company and save your certificates history.
Yandex can revoke a Yandex.Direct or Yandex.Metrica certificate of expertise. Information about this will appear on the certificate verification page and on the Yandex.Expert main page. We will also send an email about the revocation to the certificate holder.
Yandex retains the right to not explain the reasons for canceling a certificate.