Changing component lead to an existing user gives error "user does not exist".

[Petter Eriksson]

I am changing an existing component's lead. The new lead exists and can do all other tasks in jira, but I get the error message "user does not exist". I can change to other users, just not this particular one.

[GabrielleJ]

Check if that user have the appropriate roles to view your project.

[Petter Eriksson]

He does. Has the same as the current lead.

[GabrielleJ]

Is the account "Active"? 

[Petter Eriksson]

Yes it is