يا حبى انت معملتش الخطوات ديه
go Tools > Options... > Designers > and Clean "Prevent saving changes that require table re-creation" .
now
_RefObjCommon > Design > right click ID Column Set a primary key > Column Properties > Indetity Spercification > (Is Indetity) set "Yes" same with the others.
NOW DO THE SAME WITH Tab_RefHive and Tab_RefNest BUT SET INDENTITY OFF
ok now u can exec the querys without any errro
RefObjchar> Design > right click ID Column Set a primary key > Column Properties > Indetity Spercification > (Is Indetity