Well, I tried to run picketlink-authorization-idm-jpa from wildfly quickstarts application on top of
Wildfly Beta 1.

15:51:51,381 ERROR [org.jboss.as.controller.management-operation] (management-handler-thread - 10) JBAS014613: Operation ("deploy") failed - address: ([("deployment" => "jboss-as-picketlink-authorization-idm-jpa.war")]) - failure description: {"JBAS014671: Failed services" => {"jboss.deployment.unit.\"jboss-as-picketlink-authorization-idm-jpa.war\".component.IDMInitializer.START" => "org.jboss.msc.service.StartException in service jboss.deployment.unit.\"jboss-as-picketlink-authorization-idm-jpa.war\".component.IDMInitializer.START: java.lang.IllegalStateException: JBAS011048: Failed to construct component instance
Caused by: java.lang.IllegalStateException: JBAS011048: Failed to construct component instance
Caused by: javax.ejb.EJBException: org.picketlink.idm.SecurityConfigurationException: PLIDM000069: Could not create IdentityManagerFactory implementation [org.picketlink.idm.internal.DefaultIdentityManagerFactory].
Caused by: org.picketlink.idm.SecurityConfigurationException: PLIDM000069: Could not create IdentityManagerFactory implementation [org.picketlink.idm.internal.DefaultIdentityManagerFactory].
Caused by: org.picketlink.idm.SecurityConfigurationException: Error configuring JPAIdentityStore - no ATTRIBUTE_IDENTITY property found in identity class [org.picketlink.idm.jpa.schema.CredentialObjectAttribute]"}}
15:51:51,389 ERROR [org.jboss.as.server] (management-handler-thread - 10) JBAS015870: Deploy of deployment "jboss-as-picketlink-authorization-idm-jpa.war" was rolled back with the following failure message:
{"JBAS014671: Failed services" => {"jboss.deployment.unit.\"jboss-as-picketlink-authorization-idm-jpa.war\".component.IDMInitializer.START" => "org.jboss.msc.service.StartException in service jboss.deployment.unit.\"jboss-as-picketlink-authorization-idm-jpa.war\".component.IDMInitializer.START: java.lang.IllegalStateException: JBAS011048: Failed to construct component instance
Caused by: java.lang.IllegalStateException: JBAS011048: Failed to construct component instance
Caused by: javax.ejb.EJBException: org.picketlink.idm.SecurityConfigurationException: PLIDM000069: Could not create IdentityManagerFactory implementation [org.picketlink.idm.internal.DefaultIdentityManagerFactory].
Caused by: org.picketlink.idm.SecurityConfigurationException: PLIDM000069: Could not create IdentityManagerFactory implementation [org.picketlink.idm.internal.DefaultIdentityManagerFactory].
Caused by: org.picketlink.idm.SecurityConfigurationException: Error configuring JPAIdentityStore - no ATTRIBUTE_IDENTITY property found in identity class [org.picketlink.idm.jpa.schema.CredentialObjectAttribute]"}}