Не совсем про интеграцию, и скорее для себя закладочку оставить.. Клиентов используюших EP лицензировать не надо
Q: The created claims user was not marked as an external user in AX so it consumed one user license in the application. The claims users should be marked as external, is it right?
A: It is a known problem that external users are not marked as external in the users form, but external users assigned to customer role and associated with a customer does not require user licenses
Solution 1739121 Forms based authentication for Public EP template