Error on deploy

[jotremar world]

When i try to deploy my project i have this error (JBoss 5):

 
18:32:25,160 INFO  [JBossASKernel] Added bean(jboss.j2ee:ear=pruebajpa.ear,jar=pruebajpa-ejb.jar,name=prueba,service=EJB3) to KernelDeployment of: pruebajpa-ejb.jar
18:32:25,162 INFO  [EJB3EndpointDeployer] Deploy AbstractBeanMetaData@122cae2{name=jboss.j2ee:ear=pruebajpa.ear,jar=pruebajpa-ejb.jar,name=prueba,service=EJB3_endpoint bean=org.jboss.ejb3.endpoint.deployers.impl.EndpointImpl properties=[container] constructor=null autowireCandidate=true}
18:32:25,291 INFO  [TomcatDeployment] deploy, ctxPath=/pruebajpa-war
18:32:25,381 ERROR [ProfileServiceBootstrap] Failed to load profile: Summary of incomplete deployments (SEE PREVIOUS ERRORS FOR DETAILS):

DEPLOYMENTS MISSING DEPENDENCIES:
  Deployment "jboss.j2ee:ear=pruebajpa.ear,jar=pruebajpa-ejb.jar,name=prueba,service=EJB3" is missing the following dependencies:
    Dependency "<UNKNOWN jboss.j2ee:ear=pruebajpa.ear,jar=pruebajpa-ejb.jar,name=prueba,service=EJB3>" (should be in state "Described", but is actually in state "** UNRESOLVED Demands 'persistence.unit:unitName=pruebajpa.ear/pruebajpa-ejb.jar#pruebajpa-ejbPU' **")
  Deployment "jboss.j2ee:ear=pruebajpa.ear,jar=pruebajpa-ejb.jar,name=prueba,service=EJB3_endpoint" is missing the following dependencies:
    Dependency "jboss.j2ee:ear=pruebajpa.ear,jar=pruebajpa-ejb.jar,name=prueba,service=EJB3" (should be in state "Configured", but is actually in state "PreInstall")
  Deployment "persistence.unit:unitName=pruebajpa.ear/pruebajpa-ejb.jar#pruebajpa-ejbPU" is missing the following dependencies:
    Dependency "jboss.jca:name=pruebaDB,service=DataSourceBinding" (should be in state "Create", but is actually in state "** NOT FOUND Depends on 'jboss.jca:name=pruebaDB,service=DataSourceBinding' **")

DEPLOYMENTS IN ERROR:
  Deployment "<UNKNOWN jboss.j2ee:ear=pruebajpa.ear,jar=pruebajpa-ejb.jar,name=prueba,service=EJB3>" is in error due to the following reason(s): ** UNRESOLVED Demands 'persistence.unit:unitName=pruebajpa.ear/pruebajpa-ejb.jar#pruebajpa-ejbPU' **
  Deployment "jboss.jca:name=pruebaDB,service=DataSourceBinding" is in error due to the following reason(s): ** NOT FOUND Depends on 'jboss.jca:name=pruebaDB,service=DataSourceBinding' **

18:32:25,682 INFO  [Http11Protocol] Arrancando Coyote HTTP/1.1 en puerto http-127.0.0.1-8080
18:32:25,714 INFO  [AjpProtocol] Arrancando Coyote AJP/1.3 en ajp-127.0.0.1-8009
18:32:25,724 INFO  [ServerImpl] JBoss (Microcontainer) [5.1.0.GA (build: SVNTag=JBoss_5_1_0_GA date=200905221634)] Started in 49s:622ms
   

Files in project:
mysql-ds.xml

 <?xml version="1.0" encoding="UTF-8"?>
<datasources>
  <local-tx-datasource>
    <jndi-name>pruebaDB</jndi-name>
    <connection-url>jdbc:mysql://localhost:3306/test</connection-url>
    <driver-class>com.mysql.jdbc.Driver</driver-class>
    <user-name>root</user-name>
    <password>root</password>
    <min-pool-size>5</min-pool-size>
    <max-pool-size>20</max-pool-size>
    <idle-timeout-minutes>5</idle-timeout-minutes>
  </local-tx-datasource>
</datasources>
   

persistence.xml

 <?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">
  <persistence-unit name="pruebajpa-ejbPU" transaction-type="JTA">
    <jta-data-source>java:/pruebaDB</jta-data-source>
  </persistence-unit>
</persistence>
   

EJB

  @Stateful
public class prueba implements pruebaLocal {
    @PersistenceContext(unitName="pruebajpa-ejbPU")
    private EntityManager em;
    public int fila() {
        Query consulta = em.createNamedQuery("Zona.findAll");
        return ((Zona)(consulta.getResultList().get(1))).getPresupuestoMes();
        //return 0;
    }
    
    // Add business logic below. (Right-click in editor and choose
    // "Insert Code > Add Business Method")
    
}
  

I don't understand why it fail