Estou usando o suite de ferramentas de fontes springs. Estou recebendo um erro no arquivo weblogic.xml

cvc-complex-type.2.4.a: Invalid content was found starting with element 'prefer-   
application-packages'. One of '{"http://www.bea.com/ns/weblogic/weblogic-web-app":retain-
original-url, "http://www.bea.com/ns/weblogic/weblogic-web-app":show-archived-real-path-
enabled, "http://www.bea.com/ns/weblogic/weblogic-web-app":require-admin-traffic,    
"http://www.bea.com/ns/weblogic/weblogic-web-app":access-logging-disabled}' is expected.
enter code here

e meu weblogic.xml se parece com isso

<?xml version="1.0"?>
<weblogic-web-app xmlns="http://www.bea.com/ns/weblogic/weblogic-web-app"     
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://www.bea.com/ns/weblogic/weblogic-web-app   
http://www.bea.com/ns/weblogic/weblogic-web-app/1.0/weblogic-web-app.xsd">
<jsp-descriptor>
    <keepgenerated>true</keepgenerated>
    <page-check-seconds>60</page-check-seconds>
    <precompile>true</precompile>
    <precompile-continue>true</precompile-continue>
</jsp-descriptor>
<container-descriptor>
    <optimistic-serialization>true</optimistic-serialization>
    <prefer-application-packages>
        <package-name>antlr.*</package-name>
        <package-name>javax.persistence.*</package-name>
        <package-name>org.apache.commons.*</package-name>  
    </prefer-application-packages>
    <show-archived-real-path-enabled>true</show-archived-real-path-enabled>
</container-descriptor>

</weblogic-web-app>

o erro é mostrado no início da tag ..