I have a plugin developed in MAPI C++ which interacts with our server using SOAP APIs.

I am able to create profile and it works fine. But when I try to add second account of same server in existing profile by following below steps, it throws the error shown in below screen shot.

Open Outlook with existing profile configured->File->Account Settings->Account Settings->New

Any help why I am getting above error? Is it restriction from Outlook side?

Tried to look into different MAPI properties but it didn’t help