Please help: Two-Sided One-to-One Mapping issues warning when owned instance does not exist

Hello,
Is it expected behavior? I have two classes A and B, B references A and its
foreign key column is its PK
A owns B (marked as inverse-owner in JDO metadata) when I access A.getB() if
B does not exist I get a warning.
Is it to be expected? Does two sided relation always require presence of
both sides of the relation and does nto fit my need?
Is there any way to have bi-directional association in my case with owned
record being optional?
Should I use two simple one sided one-to-one or may be simple one sided from
child to owner and One-to-One with Inverse Columns from owner to child
What are disadvantages of using two one sided (simple and inverse) vs.
two-sided?
Thank you
Alex

Here is what I had to do to solve this issue:
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domain isn't trusted.
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[osantos]

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=======
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<?xml version="1.0" encoding="UTF-8"?>
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====
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====
[RPC Fault faultString="[MessagingError message='Destination
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http://www.adobe.com/2006/flex/mx/internal::invoke()[E:\dev\3.0.x\frameworks\projects\rpc\ src\mx\rpc\AbstractInvoker.as:257
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at Function/
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http://adobe.com/AS3/2006/builtin::apply()
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http://www.adobe.com/2006/actionscript/flash/proxy::callProperty()[E:\dev\3.0.x\frameworks \projects\rpc\src\mx\rpc\AbstractService.as:285
at
FlexJ2EE_test/___FlexJ2EE_test_Button1_click()[C:\Prj\workspace\RemoteTest\flex_src\Remot eTest.mxml:36]

While creating a Flex project using Flex builder, did you
select the server type for your project? If you did not select a
server type for your flex project, did you configure your compiler
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Please help: Two-Sided One-to-One Mapping issues warning when owned instance does not exist

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