Jira SSO to Microsoft AD integration is not working for few users

[Krithica_Gowrisankar-ext]

Hi,

We have recently integrated Microsoft Azure AD to Jira. The SSO login works for most of the users. But for few users whose username is mismatched and sso login fails.

For example : From AD: userid : Krithica.Gowrisankar 

My email id : Krithica.Gowrisankar-abc@abc.com

The Unique user Identifier attribute inside AD is : ExtractMailPrefix(user.userprincipalname)+1

When trying SSO Login My user id entered is Krithica.Gowrisankar-abc which creates mismatch and login fails.

For working users , the user id from ad also have -abc / email id  is without -abc so no issues.

We are unable to edit the user ids in AD. 

Is there anyway we can modify the unique identifier attribute in AD to match all the possibilities of user ids in Jira so the SSO login works for all?