You need to have an account and first apply for Google Cloud Storage service. Afterwards, go to your Google Cloud Storage project page to set up IAM Permissions.
Step 1
Screeenshots are for reference only. Your mileage may vary.
Click IAM & Admin or IAM Permissions.
Step 2
Click ADD.
Step 3
Open Cloud Backup Center to add Google Cloud Storage.
After copying the Cloud Backup Center service account, go back to the Google Cloud Storage page to add the copied information to the new principals column.
Step 4
Select Storage Admin when adding roles.
Step 5
Click SAVE to complete.
Now you can add your project to Cloud Backup Center.
Step 6
Go back to your Google Cloud Storage project page and copy the Project ID.
Step 7
Return to Cloud Backup Center to paste it into the column to begin setting up a backup job.
