CAFFindException, connecting object editors

I have 2 questions:
1. I have been successful in calling a sap webservice using caf core (PurchaseOrderVendorAddress_WSD). I imported it and used an entity service as a wrapper. It worked fine. But with another one (ProductList_WSD) it gives the following error :
ERROR. The following exception occured while processing your request: com.sap.caf.rt.exception.CAFFindException.:
any ideas. The error comes in the "service browser" under test tools
2. Some one asked a question before as to how to connect 2 object selectors. This is in line of that. I have a purchaseorderitem, which has among several attributes:
productID and productDesc.
The user inputs the productId through the UI but the productDesc is generated via the webservice mentioned in question 1. The problem is I cannot put both in same entitity service because then I dont know what to do with the persistence (remote/local). Hope you understand. So I guess I have to create two entity services. And on submit, the first one calls the second one and automatically fills up the productDesc attribute. How do I do this? Is there any tutorial for such a purpose ?
Your suggestions are highly appreciated.

now that you've defined your Service Layer abstraction, you have to define your UI layer. If you have steps to do you need to define your process layer.
In your scenario we need to develop simple UI to simple info and pass output of one step as input of next step. So my recommendation is for you to use freestyle webdynpro for individual UIs and Guided Procedures for UI and data flow.

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>
Hi all,
I am developing a Stateful session bean that has a
Connection object as its instance variable. And this
bean starts transaction that spans across multiple
method calls and finally either commit or rollback.
BeanClass
UserTransaction utx;
Connection conn;
ejbCreate()
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1. General Question: In order for a Connection object
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CAFFindException, connecting object editors

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