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Webdynpro - Check if a portal user has a user in R/3 Backend

Hi Experts,

i have following problem, and maybe some of you can help me out with an idea or (much better) a solution:

Our Company is running an Enterprise Portal on NW2004s (SPS 18). Currently i am developing a Java WebDynpro Application for the portal called Transactionstarter. Withhin this application a portal user can simply add a backend System (R/3), a transaction and a Description. This information will be stored in a xml file in userhome in KM. When the user clicks the description, SAP WinGui will open with the transaction he defined before. We use SSO for opening the transaction if the user has a backend user. If not, the loginscreen of the backend will appear.

All this works fine.

Now we have the requirement for an automated system check.

The portal user can run an initial system check. This system check should check all configured backend systems if the portal user has a user in R/3 backend.

But how can i check if my portal user exists in backend?

I cannot use JCO because we have a lot of Systems (more than 300 all together) and i don´t want to create a destination for every system. Or did i misunderstood something with JCO?

Does anyone of you have a solution, how i can check every system, if the portal user has also a backend user?

Thanks in advance.



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