RFC in a WebDynpro application

Question

We are currently implementing a project for a client that has the WAS 7.0 installed together with BW server, while having R/3 4.6C in another machine.
We faced difficulty when come to the data binding for Webdynpro application that the common HR tables such as PA0015, PA0001 are not available in the BW server.
I am sure this should be a common issue and we want to avoid create the messy customised table structure.
I did some readings on the service call function but by using the wizard to create it, it doesn't recognize the function module and destination. I have already created the connection between the two servers in t-code sm59.
Thus, Is it possible that we do RFC for the data binding of Webdynpro application? And what should we aware of if we decide to go with this solution?
Any feedback and comment will be greatly appreciate!
Message was edited by:
Jin Jin Ooi

Answer 1

Hi Jin Jin ...
when creating a service call with the wizard RFC is not possible. So the wizard itself only knows FMs on the current machine.
In this case you have to write the RFC call by hand.
Your problem with the missing data structures on the machine with WD4A is
something we faced in the beginning of our project. We did not want to import all
missing structures to the WAS 7.0 so we decided to test WebService calls to the
BAPIs on the R/3. This was kind of easy because the proxy generation
automatcally creates all necessary structures. But anyway, you still loose
translations, search helps and other cool stuff which is available if your WD4A
application is on the same machine as all the FMs and data structures you want
to use. 
So depending on the amaount of data structures and function modules you want to
use you could consider to import the data structures to the WAS and write
Wrapper FMs which call the R3 FMs via RFC or to use web service calls.
Cheers,
Sascha