Dear experts,
my question concerns enhancing services in a peer-to-peer scenario without a PI system in the system landscape. If this is not the right place for the question, please move it to the appropriate place.
We have following system landscape: NetWeaver 7.1 EHP 1 with AddOn "Banking Services from SAP" and ERP 6.0 EhP 6, where we make use of the New-GL-component. These two systems are connected via a P2P-connection (direct communication); there is no PI system in between, nor do we currently have such a system available elsewhere in our system landscape. We use a consumer proxy on NW side, which sends posting documents to ECC via a service using protocol https. The connection works well, we can send our posting documents without any problems from NW to ECC.
We now face the requirement that we need to add some customer-specific characteristics to the posting documents (on header and/or item level) and send them along with the SAP standard information to ECC. This apparently can only be done when we enhance the services on both sides.
My research makes me believe that one needs the Enterprise Service Builder to enhance services. The ESB is part of the PI system which we currently don't have in our scenario. After the services are modified in PI, the changes are then published to the other systems via SLD. So my questions are:
- can we modify/enhance the services in a P2P-scenario without a PI system? If so, what are the correct tools and steps to do so?
- in case we do need ESB to modify/enhance the services, could we still maintain the direct communication between NW and ECC after the modifications are published to NW and ECC? Or does this scenario then require to send the posting documents through the newly created PI system (i.e. to maintain compatibility due to further enhancements in the future, etc.)?
It seems that a P2P connection might only be suitable for a scenario where SAP delivered (standard) services are sufficient. All other scenarios might require to set up a PI system to enhance the services to fit the needs.
I appreciate your input.
Kind regards,
Mark