To ensure your AdWords traffic is tagged correctly you will need to do the following:
Enable auto-tagging. This is the recommended approach and ensures that you get the most detailed Google Ads data.
Add a tracking template at the account level an account level.
1. Enable auto-tagging
To enable/disable auto-tagging:
Sign in to your Google Ads account.
In the menu on the left, click Settings.
Click the Account settings tab above the table.
Click the Auto-tagging section.
To enable auto-tagging, select "Tag the URL that people click through from my ad." To disable auto-tagging, clear the selection.
Click Save.
Note: If you’re using a combination of auto-tagging (GCLID) and manual parameters, some parameters may differ. For example, the client may want utm_medium to be “paidsearch” instead of PPC for their own reporting purposes.
Since there is a disconnect between the GCLID value for medium (cpc) and the manual UTM value for medium (paidsearch), your PPC data may not flow into Google Analytics properly. If you have conversion tracking setup and being imported from GA, that may also break.
To avoid this, make sure that this small box is unchecked in property settings in GA:
2. Adding Tracking Templates at the Account Level
Note: We recommend setting your tracking template at the account-level in your Google Ads account. Use this set of instructions to add your tracking template to all ads.
Steps to set up
Once you've logged into Google Ads, select the account you'd like to update, then choose All Campaigns.
2. Click Settings on the lefthand side of the page, then account settings.
3. Keep the first option selected "Tracking template". Then, type {lpurl} and add your tracking template. In this case, {lpurl} represents your final URL, so you won't have to manually enter your ad URLs.
4. Copy and paste this into your tracking template field.
{lpurl}?campaignid={campaignid}&adgroupid={adgroupid}&creative={creative}&network={network}&device={device}&matchtype={matchtype}&keyword={keyword}&adpos={adposition}
5. Click Save to create and save your tracking template.