RegisterNewUser resulting in duplicate names

Hi All,

Is it possible that using RegisterNewUser method could result in duplicate entries in NAB. We use an automated process that use this RegisterNewUser method.

User A is in NAB, with a short Name X

When we register User B, the short Name results in X as well.

Any pointers how to avoid this. Now that we know this happens, we will add a programatic check. But RegisterNewUser is supposed to fail and throw an error. Is it not ? Is there something else here ?

We have set the EnforceUniqueShortName = True

Despite this we get this error.

Thanks

AA