As an alternative, you can use the - wildcard character instead of the project ID.
When possible, avoid using the - wildcard character because it can cause response messages to contain misleading error codes. For example, if you try to access the service account proejcts/-/serviceAccounts/fake@example.com, which does not exist, the response contains an HTTP 403 Forbidden error instead of a 404 Not Found error.
Service Account ID
The resource name of the service account.
Can either be an email address or its unique ID.
This information can be retrieved using the “List Service Accounts” action.