Good morning,
We have two systems, one is in VB and the other in C # an identity manager (which serves to unify the login, we will put more systems inside it so that there is only one login user), we have to pass the User and the application ID for the system in C #. this system will check if the user exists, if there is a login, and the system in VB should pop a message on the screen saying that the user exists, we are using WEB.Api.
Thank you in advance.