Can't open this item, you do not have sufficient permission to....
 

I share my contacts to one of my co-works. He can open most of my contacts
but a few of the contacts when he try to open up the following message will
popout.
"Can't open this item, You do not have sufficient permission to perform this
operation on this object. Please contact folder contact or system
administrator"
I see this message even I grant him "owner permission" to my contact. It is
not only happen to him only. I try to grant to someone else, the same error
message pop out.
The only way can bypass it is to delete that contact and recreate one. I
don't know if there any way to set permission on indivisual contact level
instead of contact folder level. Also, I make sure that those contact are
not mark as "private"
I am running out of idea.......
Any suggestion is highly appreciated.....