Is there a SDK for C++ or .NET available for SAP ERP 4.0 as I need to read and write data into it.
+1
A:
I am not sure what version SAP ERP 4.0 refers to, but there is certainly the RFC SDK that you can use (can be made to work with C++ and .Net):
Very old version: http://help.sap.com/saphelp_40b/helpdata/pt/8c/20e2bf493311d1894a0000e829fbbd/frameset.htm
Recent version: http://help.sap.com/erp2005_ehp_04/helpdata/EN/22/04287a488911d189490000e829fbbd/frameset.htm
Stefan Egli
2010-09-08 10:36:38