How to create a mapping key with Google Maps?

Create a Google Cloud account if you don't already have one by visiting cloud.google.com.
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Log in to the Google Cloud Console using your Google account.
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Click on Navigation menu (☰).
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Click on APIs & Services.
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Create a new project by clicking on the Create a project button in the top left-hand corner of the console.
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Name your project.
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Add billing info to your project. You’ll need to activate billing on your Google Cloud account for the API key to work — it’s a crucial step! (This is a monthly subscription, so you'll see the cost month by month.).
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Click on APIs & Services.
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Click on Create Credentials.
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Click on API key.
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Your key is ready!
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Now the key will appear in your dashboard and you need to configure the following steps:
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Click on your new API key.
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Under Application restrictions, select HTTP referrers (websites).
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Click on Add an item and type the subdomain of the store locator.
​Important: Add a * at the beginning and at the end of your URL.
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Example: stores.gnc.com/

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Under API restrictions, select Restrict key.
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Select the following 6 APIs and click Save:
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⚠️ In case you don’t see these APIs in the list, follow the next steps:

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Click on the Navigation menu.
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Click on APIs & Services > Library.
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Click on View all.
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Select the 6 APIs you're missing and click on each of them to Enable:
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Then go back to the Navigation menu.
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Click on APIs & Services > Credentials.
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Click on your API key.
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Click on Restrict key.
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Click on Select APIs.
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Select the 6 APIs and click Save:
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Click on Save again — and that’s done!
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