Don't allow the creation of user with same Email id in the same domain

ISSUE TYPE

Enhancement/Improvement Request

COMPONENT NAME

Component: API/ UI

CLOUDSTACK VERSION

Cloudstack version 4.18

SUMMARY

Don't allow the creation of user with same Email id in the same domain

Steps to reproduce the issue

1. Navigate to domain > Accounts > Click on a particular Account > Create say user1 with (test@gmail.com)

2. Navigate to domain >Accounts > Click on a particular Account > Create say user2 with (test@gmail.com)

Screenshot

**Expected behaviour**

Cloudstack should not allow to create the user with same Email address in the same domain

If a oauth is configured for a user in a cloudstack , email address is used as key to identify.

Cloudstack throws an error saying there is an already multiple user having the same email address in the same domain.

It would be proactive checking if we could block the creation of user with same email address during the user creation

El issue identifica la creación de usuarios mediante API/UI como punto de entrada, pero no proporciona archivos de implementación ni pruebas. Rastrea la creación de usuarios dentro de un dominio y añade una prueba de regresión que demuestre que se rechaza un correo electrónico duplicado en el mismo dominio, mientras se sigue verificando el comportamiento esperado.

Escrito por el modelo de indexación a partir del texto del issue.