Before getting started, you’ll want to make sure your Salesforce account is set up in the following way. If someone else manages the Salesforce account for your business, they can help you with this step.

1. Update the Opportunity object with the following changes:
   1. Create a custom field with the Field Name "GCLID" (in all capital letters, without the quotes). The “Field Label” can be anything you want. Set the field length to 255 characters. Make this field read-only so your users don't accidentally alter it.
   2. Enable field history tracking for the "Stage" field.
2. Update your Lead object with the following changes:
   1. Create a custom field with the Field Name "GCLID" (in all capital letters, without the quotes). The “Field Label” can be anything you want. Set the field length to 255 characters. Make this field read-only so your users don't accidentally alter it.
   2. Enable field history tracking for the "Lead status" field.
   3. Map your new Lead.GCLID field to the new Opportunity.GCLID field.

If you’ve already set up AdWords Conversion Import, you’ve already done this step and can skip it now.

When a visitor clicks on your AdWords ad, AdWords will append a "gclid" URL parameter to the URL that leads to your landing page.

You'll need to store this parameter's value in a cookie to retrieve it later when a prospective customer enters data into the web-to-lead form. If you have a webmaster, he or she can help you edit your website code to allow you to store the GCLID value in a cookie.

If you embed the following JavaScript code immediately before the closing tag of your landing page(s), the GCLID value will be saved in a cookie.

We strongly recommend that you insert this code on every web page on your site. This way, you won't need to add it every time you create new ads with new landing pages. You also won't have to worry about losing GCLIDs if you start driving ads traffic to different landing pages. So, consider adding this code to your web page template—or a shared page element like the footer—so that all your new pages will automatically include the code.

To store the GCLID with your lead's information, you’ll need to modify your web-to-lead submission form(s) so all new leads will include the GCLID value. You may need help from a webmaster and Salesforce admin to complete this step.

The following explains how to add the GCLID field to your existing web-to-lead forms.

1. Generate a standard web-to-lead form and include all fields you want your prospects to submit. Also include the lead field "GCLID". The HTML generated by Salesforce will include this code (where xxxx stands for the ID of the field GCLID):
   
   GCLID:
2. Change this code to: 
   These changes mean that you're removing the attributes "maxlength" and "size," and changing the value of the type attribute to "hidden." Leave the attributes "id" and "name" as is (they'll be different for every Salesforce organization).
3. Once you have created this new hidden input field, add it to the HTML of your existing web-to-lead forms in between the
   tags.
4. On the same HTML lead submissions page, add the following code between the tags:
   
       
   In this code replace "xxxx" with the ID from step 1 above.

Salesforce and your web pages are now ready to gather all the data. This script will populate the hidden field with the GCLID value, and populate the custom fields when the web-to-lead form is submitted. 

Keep in mind: your web-to-lead form needs to be located in the same domain as the rest of your web pages, so the forms can read the GCLID from your cookie.

1. Visit your website, adding the parameter ?gclid="test" to your URL.
   
   https://www.example.com?gclid="test"
2. Navigate to your lead form and submit a test lead.
3. Sign in to Salesforce, find this new test lead, and see if your custom GCLID field shows the value "test."
4. Convert the test lead to an opportunity. The new opportunity's custom GCLID field should also show "test."
5. Repeat steps 2 through 4 for all your lead forms to make sure that each is configured properly. If test appears in the GCLID field for leads and opportunities that originated from all of your lead forms, then you’re ready to link your accounts.

In this step, you’ll need to sign in to Salesforce. See the permissions requirements here. To see the full instructions for linking your accounts, read Link AdWords and Salesforce accounts.

Once your AdWords and Salesforce accounts are linked, you need to choose which milestones––lead statuses and opportunity stages––to monitor for conversions. This means that every time a lead or opportunity progresses to one of these points, a conversion will be recorded in AdWords.

1. Next to the Salesforce account you want to linked, click Set up conversions. (If you clicked “Set up conversions” from the dialogue box after linking accounts in Step 6, you can skip this step.)
   
2. Check the boxes under "Milestone" to select the lead statuses and opportunity stages that you want to import as AdWords conversions.
3. In the “Conversion” column, click the dropdown menu for your first selected milestone and select Create a conversion.
4. Click Name. Enter a conversion name that will help you recognize this action later when it shows up in conversion reports. An example might be "lead sales qualified" or "new opportunity." Click Done.
   
5. Click Value. Select whether each conversion has the same value, you want to use the value from the opportunity's Expected Revenue field in your Salesforce account (only for opportunity stage conversions), or you don’t want to count a value. Click Done.
6. Click Count. Select whether to count every or one conversion per ad click. Generally, "Every" is best for sales, and "One" is best for leads. Click Done.
7. Click Conversion windows. Select a conversion window (how long after an ad click you want to track conversions) for this conversion action. To capture as many conversions as possible, select the maximum of 90 days. Click Done.
8. Click Create
9. Repeat steps 3 to 8 for each of the rows you selected in step 2.
10. Under “Import schedule,” select from the drop-down menu how frequently you want AdWords to import your conversions. Then select a time for your imports.
    
    Note: If you use an AdWords automatic bidding strategy to bid for conversions, your bidding strategy will work best if you upload conversions frequently, ideally once a day.
    
11. Click Save.

How conversion value is imported

If you've asked us to import conversion value from your Sales Cloud account, AdWords calculates the value by multiplying the opportunity stage's "Probability" value (as configured in your Sales Cloud account) by the most recent value in the opportunity's "Amount" field.  

If you feel strongly that the conversion value should be calculated based on the amount value that was set at the time to opportunity stage changed, then we recommend that you set your imports to happen daily.

Your account will now automatically import conversions from Salesforce on the schedule you’ve set up.

To make sure everything is working correctly, click Import now to manually import conversions. Stay on this page until the import is complete, and you’ll see a message letting you know if the import was successful or not.

The first time you request an import, AdWords will retrieve all conversions that occurred within the last 14 days. For every subsequent import, we’ll include all conversions since the last import (up to 14 days previous), so it's important to import your conversions at least once a week. 

The import can take a few minutes depending on how many conversions will be uploaded. The “Import now” button will be disabled when an import is taking place, when you haven’t mapped any Salesforce leads and opportunities to AdWords conversion actions, or when there are unsaved changes to your conversion actions.

If there's a problem with one of your scheduled imports, you'll receive a notification in your AdWords account.