javax.persistence.TransactionRequiredException: No active transaction for PuId=...

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0"
    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_2_0.xsd">

    <persistence-unit name="hcms" transaction-type="JTA">
        <jta-data-source>jdbc/hcms</jta-data-source>
    </persistence-unit>
</persistence>

@Stateless
public class CommunityAddressDao extends Dao<CommunityAddressEntity, Integer> {
    @PersistenceContext(unitName="hcms")
    private EntityManager em;

    ...

}

@Stateless
@Path("/addresses")
@Produces(MediaType.APPLICATION_JSON)
@RolesAllowed({"user"})
    public class CommunityAddressService {
    @Inject
    private CommunityAddressDao addressDao;

    ...

    @POST
    @Consumes(MediaType.APPLICATION_JSON)
    public CommunityAddressDto registerAddress(CommunityAddressDto address) throws DuplicateAddressException, ManagedAddressException, BadRequestException {
        // Validation

        CommunityAddressEntity entity = new CommunityAddressEntity();
        entity.setCommunityUuid(address.getCommunityUuid());
        ...

        addressDao.persist(entity);

        return new CommunityAddressDto(entity);
    }
}

@ViewScoped
@Named("addressBean")
public class CommunityAddressBean implements Serializable {
     private static final long serialVersionUID = -1685666287294618708L;

    @Inject
    private CommunityAddressDao addressDao;

    private List<CommunityAddressEntity> addresses;

    ...

    @PostConstruct
    private void init() {
        // Retrieve first 10 addresses - Works fine
        addresses = addressDao.findAll(10, 0);
    }

    public void createAddress() {
        CommunityAddressEntity entity = new CommunityAddressEntity();
        entity.setCommunityUuid("some UUID");
        ...

        // Throws javax.persistence.TransactionRequiredException: No active transaction for PuId=...
        addressDao.persist(entity);
    }
}