Hi Team,
one of our clients has this issue
They have recently renewed Atlassian access, all the new users are not able to log in through one login to Jira.
Old users can access as usual(2yrs back they have set up one login and these new users are added to the AD group as well.
PFA screen shots.
User failed creating in app. <email-id> could not be created in Atlassian Cloud. Raised Exception: OneLogin::Provisioning::Exceptions::CouldNotAuthenticate