How to create Google Map API key for Booking extension
In this tutorial, you can create a Google Map API and setup for your website.
Go to link:https://developers.google.com/maps/documentation/javascript/get-api-key
Select Your project and click continue button.
Enter Title and your domain.
Search Google Places API Web Service.
Change Enable Google Places API Web Service to Enable.
Make sure that Google Maps JavaScript API and Google Places API Web Service are enabled on your API
Copy API key to Booking System extension’s Setting.
Go to System -> Configuration -> Booking System Settings section and enter the key to Google API Key.
Final Steps: Go to System -> Cache Management to clear cache your website.