"lastra" wrote : | | | it say, the name of the field "numeroLinea" not is correct, but i dont understand coz is the same field as my datebase table. | | I dont think you have a column named "numeroLinea" in your table. I guess, you have a column named NUMERO_LINEA. Looking back at the code that you posted, i guess you will have to move the @Column annotations to the PK class. Something like this: Entity class (remove the @Column annotation from this class for the Ids): @Entity | @Table(name="APUNTES") | @IdClass(ApuntesPK.class) | public class Apuntes implements Serializable{ | //Claves | @Id | private Integer empresa; | | @Id | private Integer numeroAsiento; | | @Id | private Integer numeroLinea; | | private String modificado; | ....... | others fields and methods get/set | | } The PK class (introduce the @Column annotation on the id columns): | public class ApuntesPK implements Serializable { | | @Column(name="EMPRESA") | private Integer empresa; | | @Column(name="NUMERO_ASIENTO") | private Integer numeroLinea; | | @Column(name="NUMERO_LINEA") | private Integer numeroAsiento; | | //private static final long serialVersionUID = 1L; | | public ApuntesPK() { | | } View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4144427#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...