Facing this error : "The INSERT statement conflicted with the FOREIGN KEY constraint "FK_tb_stadmdet...

Question

Error : 

"The INSERT statement conflicted with the FOREIGN KEY constraint "FK_tb_stadmdet_tb_usr". The conflict occurred in database "admission", table "dbo.tb_usr", column 'usrcod'. The statement has been terminated."

Now if I will remove foreign key relationship, I am not getting the values from other tables to my table(because of which i have made foreign key relation).

Now what can be done to overcome this error, and I can get values from other tables to a table.

Thanks