JPA Error a relationship that was not marked cascade PERSIST - jsf-2

Question

I have a table and JPA Entity called State (of a Country) and through JPA, I am trying to write a code for a User (Entity) to register on the website. Clearly, there is a one-to-one relationship between User and State (a User belongs to only one State). Here is my code:
#Entity
#Table(name = "STATE")
public class State implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name = "ID")
private int id;
#Column(name = "CODE")
private String code;
#Column(name="NAME")
private String name;
And User code is as follows:
#Entity
#Table(name = "USER")
public class User implements Serializable {
....
#OneToOne()
#JoinColumn(name = "STATE_ID", referencedColumnName = "ID")
private State state;
The database tables are as follows:
CREATE TABLE IF NOT EXISTS `bjm`.`STATE` (
`CODE` CHAR(2) NOT NULL,
`NAME` VARCHAR(40) NOT NULL,
`POST_CODE_PREFIX` VARCHAR(10) NULL,
`LANG` CHAR(2) NOT NULL,
`ID` INT NOT NULL AUTO_INCREMENT,
PRIMARY KEY (`ID`))
ENGINE = InnoDB;
CREATE TABLE IF NOT EXISTS `bjm`.`USER` (
`ID` INT NOT NULL AUTO_INCREMENT,
`FIRSTNAME` VARCHAR(45) NOT NULL,
`LASTNAME` VARCHAR(45) NOT NULL,
`EMAIL` VARCHAR(50) NOT NULL,
....
PRIMARY KEY (`ID`),
CONSTRAINT `fk_USER_STATE1`
FOREIGN KEY (`STATE_ID`)
REFERENCES `bjm`.`STATE` (`ID`)
ON DELETE NO ACTION
ON UPDATE NO ACTION,
)
ENGINE = InnoDB;
However, when I try to create/register User in my JSF2 application, I get the following error:
java.lang.IllegalStateException: During synchronization a new object was found through a relationship that was not marked cascade PERSIST: org.bjm.model.State
I don't want to create a new State record in the DB. They are already there (as reference data) and just need an assignment to the User via the foreign key.
May be I a missing something, but I need a resolution. Any constructive comment would be of extreme help.
Thanks

Answer 1

Clearly, there is a one-to-one relationship between User and State (a User belongs to only one State)
Well, clearly this is wrong. This is classic #ManyToOne, because many users are from the same state. It should look like this:
#Entity
#Table
public class User implements Serializable {
// (...)
#ManyToOne
#JoinColumn(name = "STATE_ID")
private State state;