Configuring Google Drive as Recording Storage

You can use Google Drive as a Recording Storage only inside a Shared Drive created in Google Workplace. A normal, personal, GMail account cannot use the Google Drive as Recording Storage.
Access the Google Cloud Console
Access your Gmail account then connect to https://console.cloud.google.com/
Create or select a project. Do not chose "My First Project", but create a new project if needed. The "My First Project" has several limitation.
Create a Service Account by going in the Service accounts section
Choose Manage keys from the three doc Actions Menu on the right. Create a new JSON key and store it safely.
Using the private key
Now you have the private key saved to your computer
The private key will be downloaded once to your computer and cannot be downloaded again. It needs to be regenerated if lost.
Enable API access
Create the shared Drive
In the Gmail account, create a Shared Drive.
https://drive.google.com/drive/folders/0ADYbcKYesgiXUk9PVA
Take note of the shared drive ID by accessing it and looking at the address bar. For this folder the shared directory ID is 0ADYbcKYesgiXUk9PVA
Share the shared drive with the service account you have created
You can find the service account email inside the JSON key downloaded
"client_email": "recording@my-pbx-499816.iam.gserviceaccount.com"
Configure the data in the MIRTA PBX