For an Organization unit, unable to assign Business partners in devlopment box

Dear All,

For an Organization unit, unable to assign Business partners in development-box , when i click on assign button

its navigating to organization unit only (choose relation ship)

But for production system i can assign the BP with out any issue

Can u please suggest us, do we have any settings to chose the relation ship as position...

Please find below screen image for your reference

Thanks ,

Rahul Yedapally