spring jpa - generated non-primary value become zero when update

spring jpa - generated non-primary value become zero when update

//to accomplish this problem  we need to add "updatable=false" to that column
//because without this definition when we need update a row automatically hibernate assign default value 0 (zero)

    @Basic
    @GeneratedValue
    @Column(name = "id", insertable = false, updatable = false)
    public long getId() {
        return id;
    }