Should I have a separate client ID if I'm using a Google Drive service account?

the service account file has everything in it already.

[gdrivesa]
type = drive
scope = drive
service_account_file = C:\data\rclone\rr\other\gdrive.sa\test01-xxx420-6f8144bb217f.json

contents of C:\data\rclone\rr\other\gdrive.sa\test01-xxx420-6f8144bb217f.json

{
  "type": "service_account",
  "project_id": "test01-309420",
  "private_key_id": "xxx",
  "private_key": "-----BEGIN PRIVATE KEY-----xxx-----END PRIVATE KEY-----",
  "client_email": "test02@xxx.iam.gserviceaccount.com",
  "client_id": "xxx",
  "auth_uri": "https://accounts.google.com/o/oauth2/auth",
  "token_uri": "https://oauth2.googleapis.com/token",
  "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
  "client_x509_cert_url": "https://www.googleapis.com/robot/v1/metadata/x509/xxx.iam.gserviceaccount.com"
}