In order to use remarketing with Google Analytics, you need to:
- have a goal conversion rate of 20%
- have a goal conversion rate of 30%
- have at least one active AdWords account
- have your Google Analytics and AdWords accounts linked
Explanations:
To use your Google Analytics tag instead of the AdWords remarketing tag, you’ll need to have the following:
- Google Analytics tag on your website
- Linked AdWords and Google Analytics accounts (when linking your accounts, you’ll need administrative access to the AdWords account and edit access to the Google Analytics account)
- Remarketing and advertising features enabled in Google Analytics
For detailed instructions, see Enable remarketing and advertising reporting features in Google Analytics
Read more here: https://support.google.com/adwords/answer/2476688?hl=en
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