What does it mean?
On May 25 , 2018, with the entry into force of the EU General Data Protection Regulation (GDPR), Google's EU User Consent Policy is update to be in line with the GDPR. This policy explains that you are required to disclose certain information to end users of your websites and apps in the European Economic Area (EEA) and the United Kingdom and to obtain consent from those end users.
What to do?
Please make sure that
consent of the user is obtained. (e.g. Cookie-banner)
you disclose exactly which third parties (including Google) also have access to the user data you collect on your website or app. (Privacy policy)
you do not violate Google's EU User Consent Policy.
If you need more help, get in touch with Google support.