I cannot tell you exactly what needs to be added because I don’t have any sites that use google maps. But I can tell you how to find what you want to know.
1) Edit a post and add a map
2) Examine your database wp_postmeta table and find the meta value for the field
This will tell you exactly what needs to be in that field.
From previous topics I know this is an array and that you must connect to the google map API to get the data for the address.
https://www.google.com/search?q=acf+update+google+maps+field+from+PHP+site:support.advancedcustomfields.com&client=firefox-b-1-d&sa=X&ved=2ahUKEwjLipzI7470AhXBQs0KHam_AdIQrQIoBHoECBMQBQ
