G Suite
service configuration

Name	Description
Service Provider Entity ID	google.com/a/domain
Assertion Consumer Service (Single Sign On) URL	https://www.google.com/a/<email domain>/acs
Recipient	https://www.google.com/a/<email domain>/acs
Destination	https://www.google.com/a/<email domain>/acs
Signing Certificate	True
Signing Key	True