A plain-language explanation
The Google Ads Account ID is a unique ten-digit customer number that identifies a specific advertising account.
Where it helps in practice
The account ID identifies a Google Ads account but does not grant access and should not be treated as a secret key.
The decision before implementation
We distinguish the customer account ID from the manager account ID, check billing identifiers separately and grant access through the appropriate Google Ads roles.
How to verify the result
Verify the number in the interface, assigned role and whether integrations write to the intended account.
