JBAS011470: Persistence unitName was not specified and there are 2 persistence unit definitions in application deployment, when using Spring on EAP.

Issue

My persistence.xml file has 2 persistence units and spring xml file referencing them by name. Application runs fine on Tomcat server, but can not be deployed to JBoss. Why?

Example of persistence Name from Spring mnp-servlet.xml file:

    <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean">
        <property name="persistenceUnitName" value="userPU"/>
    </bean>

    <bean id="otherEmf" class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean">
        <property name="persistenceUnitName" value="otherPU"/>
    </bean>