I have confirmed that my User Profile Service have a user 'kamalpreet' with email 'email@example.com'.
In InfoPath user also able to select the user from the People Picker control. No problem at all till this point.
In workflow, when we type
Send Email to these users and try to select the user 'kamalpreet', I cannot see this name in the list. However most of the users are present.
Even if I try to get this name from the People Picker, the workflow fails with exception
Value cannot be null
What could be the reason of this?