I removed the constraint and update the table and after that I enforced the constraint again and got following error.
I check the data in both table is fine and both the table have a primary key on it.

Thanks for help in advance

Server: Msg 547, Level 16, State 1, Line 1
ALTER TABLE statement conflicted with TABLE FOREIGN KEY constraint 'fk_ikw_indexed_form_approved_ikw_indexed_uri& #39;. The conflict occurred in database 'rns_indexed', table 'ikw_indexed_form_approved'.