Problem with CHARM

Hello experts,

I had configured CHARM for 2 system landscape and it was working fine. However, suddenly I am facing an issue related to filed which is not set as mandetory but when user try to set the status to 'in development' the filed named - subject gets mandetory. Neither it allow me to enter anything nor any value is present in the dropdown list. I was able to moved the TR correctly earlier but now it is always ask me to fill the required entry in the 'subject' field.

How should I resolve this issue? Had anybody faced similar issue before?

Any pointers will be greatly appreciated.

Thanks,

Ameya