ABAP class is deployed in SAP R3 using message interface defined in XI.
legacy ->XI WAS 6.4 ->SAP R3 (WAS 6.4)
Is there an alternate approach (ABAP class generated from netweaver developer studio) to connect legacy with local integration server of SAP R3 WAS 6.4? I'm trying to understand the pros and cons without XI as middleware. As R3 based on WAS 620 and above could able to handle proxies. Appreciate the inputs.
legacy->SAP R3 (WAS 6.4)