Why the second NamedData variable doesnot work for CreateWithParams?

Question

Hi,experts,
Working in jdev 11.1.2.3,
A scenario:
--There is a 1-M link between VO1(id,amount),VO2(id,amount,fkid1,fkid3) where VO2.fkid1=VO1.id;
--When create a new record for VO2, will select record from VO3(id,amount) and populate for VO2 with VO2.amount=VO3.amount, VO2.fkid3=VO3.id;
--VO1 render as a formlayout, VO2 and VO3 as tables in the same page;
--A CreateWithParams button for VO2;
It's OK when add the first NamedData->amount and bind to VO3.amount.
--VO2.amount = VO3.amount when a new record is created with the CreateWithParams button;
see: Re: How to create a new row for a VO based on values from another VO?
But errors will raised when add the second NamedData->Fkid3 and bind to VO3.id the same way as the first NamedData as follows:
<Utils> <buildFacesMessage> ADF: Adding the following JSF error message: oracle.jbo.domain.String
java.lang.ClassNotFoundException: oracle.jbo.domain.String
     at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(GenericClassLoader.java:297)
more info:
--VO2.fkid1(varchar2(18)), fkid3(varchar2(50)), amount(Number(18,2));
--VO1.id(varchar2(18));
--VO3.id(varchar2(18)),amount(Number(18,2));
Anyone can help?
Thanks!
Edited by: BAO.SZ on 2013-4-26 上午8:46
more info:

Answer 1

hi,Puthanampatti:
The NamedData->Amount bind to VO3.amount(number) works well.
It's the NamedData->Fkid3 bind to VO3.id(varchar2(18)) doesnot work.
Thanks!