VO Ext- Error ocurred trying to activate the wizard pageAttribute settings

Hi
I am new to OAF and working on R12.1.3 vesrion. I am facing an issue while extending standard VO CustomerAccessesVO which is in the path
/oracle/apps/asn/common/customer/server. My requirement is to add a new column AS_ACCESSES_ALL.SALESFORECE_ROLE_CODE in the extended view.
This VO uses the entity object CustomerAccessEO(/oracle/apps/asn/common/customer/schema/server) and this entity object extends another EO AccessEO which is having base table AS_ACCESSES_ALL (/oracle/apps/asn/common/schema/server).
While extending this VO, I only select EO CustomerAccessEO and then I will have the attribute in available attribute list and selected attribute list.
Available attribute list is having all the attributes which are in EO AccessEO(As CustomerAccessEO is not having any attribute it only extend AccessEO).
Selected attribute list is having all the attibutes which are present in the query of CustomerAccessesVO.
Now if I include a new attribute as my new column and even I don't include any new attribute and click on Next button. I got error 'Error ocurred trying to activate the wizard pageAttribute settings' java.lang.NullPointerException.
Now If I included my new column by adding new attribute and ignore this error I am able to extend this VO and able to get all the file Server.xml, XXCustomerAccessesVO.xml, Voimpl.java, Rowimpl.java.
But the problem is rowimpl.java file is generated empty.*
However I substitute this extended VO I am able to see the extended VO in application but that says- No entity object used. No attributes are selected.
In short my problem is:-
*1) Getting error 'Error ocurred trying to activate the wizard pageAttribute settings' in Create View Object wizard.
2) If I ignore error why *rowimpl.java file is generated empty even I checked all the check boxes.
3) Why I am getting message in application-- No entity object used. No attributes are selected.*
Please reply as this is have become critical.
Thanks
Piyush

Hi All,
Problem is still not yet resolved.
Can any one please look into it.

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    This sometimes means the element's namespace (http://xmlns.oracle.com/uix/style) is set incorrectly. This may also be an issue with the syntax of its parent element.
    Please anyone can help.
    Best Regards ,
    Yasser

    Welcome to the forums !
    Pl see if MOS Doc 360403.1 (Launcing Discoverer Plus Fails With Error "Oracle.Discoverer.Applications.Framework.Globalexceptionhandler.Execute Null" in Application.log File) is applicable in your case
    HTH
    Srini

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