I have created a new screen scheme for a new project and associated properly but still i am not able to create issue as it throws error stating custom field "component" needs to filled, where as that field has not been added into the scheme only. I am don

[Nic Brough -Adaptavist-]

You need to make components optional in the field configuration scheme or add it to the create screen.

Mandatory flags have nothing to do with screens.