Note that all SAP ERP all modules run on SAP ABAP stack. SAP NetWeaver Application Server (ABAP Stack) is part of the SAP NetWeaver portfolio and represents the ABAP-based technical basis for many SAP products. It delivers technical frameworks, tools, repositories, and much more.If you are planning to use SAP PI module then you should install Java Stack. Whenever you need something like- Adobe Interactive Forms or NetWeaver Portal stuff) that requires the Java Stack. You can go for an upgrade without installing Java Stack. In earlier releases of SAP ERP, there were SAP ABAP based instances. With the release ... Read More

It is not advisable to use CX_ROOT directly and you would require using one of its direct subclasses. Also, the propagation depends upon the exception subclass hierarchy.Subclasses of CX_STATIC_CHECK – these do not propagate automatically. You will need to do the handling yourself or there will be a syntax error in the program.Subclasses of CX_DYNAMIC_CHECK – these do not require any handling. But the program that does not handle the exception will be aborted with these subclasses.Subclasses of CX_NO_CHECK – These will get propagated automatically if the exception is not handled.

I would suggest you to use below instead of JCO_AHOST and JCO_SYSNR:Use JCO_R3NAME with system ID of the target hostUse JCO_MSHOST with message server host name or IP addressUse JCO_MSSERV with message server port numberUse JCO_GROUP with the name of the logon groupYou can refer to below link to check a working example:https://sourceforge.net/p/rcer/git/ci/master/tree/net.sf.rcer.conn