"You have exceeded your request quota for this API" in Google Map

Edit: The link below seems to be dead. You can read Google Maps Platform Billing's documentation here https://developers.google.com/maps/billing-and-pricing/billing#billing-in-the-console

Check if your project has a billing account associated to it. You can use this Google tool: https://mapsplatformtransition.withgoogle.com/

"This project does not have a billing account. You will need to add billing information for this project to continue to use Google Maps Platform. The first $200 of monthly usage is free. You only pay for what you use. You can review rates and access your spending any time in your Google Cloud Platform Console, where you can also set daily quotas to protect against unexpected increases. You can also set billing alerts to receive email notifications when charges reach a preset threshold determined by you."

It will list all your projects using Google Maps and tell you to "Add Billing" if the project status is not "in good shape".

The issue is because you haven't created the billing account for your project.

Without billing account by default good maps API will allow only 1 map load per key per day.

You can follow these steps to resolve the issue :

1. Go to Google Cloud Platform Console.
2. Enable billing account for your project.
3. Select the project that contains the API you want to review.
4. From the list of APIs on the Dashboard, click the name of the API.
5. Near the top of the page, click Quotas or Usage and set the limit according to your usage.