Need clarification while using WE19 tool

Question

Dear All,
I have gone through the forums and Blogs but still I am not convinced and need your inputs.
Scenario is IDOC to File .
In we19,We have Sender and Recipient  information to be filled in EDIDC record.
1.The sender Partner # and Partner Type is mandatory. Why sender port information is not mandatory? If not mandatory will the system take any default value?
2.If it takes the default value,the Port information will be taken from R/3 or XI system?
2. In Receiver Information for the  Port, Partner# and Partner Type, We need to give the configured names from  R/3 or XI system and need clarifiaction for the same for Sender Information also.
Please provide your inputs.
Regards
B.Dheepa

Answer 1

Hi Dheepa,
1. I wanted to know how the system recognizes and from where it is taking the information even though I did not configure the port.
> It will use the existing default port, to send the information to XI. You need to specify the receiver port while sedning the IDOC, from that system identifies the default sender port and process the IDOC to push to XI.
2. For maintaining the Prot definations, its standard format followed as SAP <SID>, for e.g. IDE800 , this indicates the port is of  SAP landscape IDE and the client is 800. If the organization have multiple SAP landscapes this convention is easy to maintain.
You use the port maintenance in the IDoc adapter to establish an RFC connection to the system that contains the metadata that the IDoc adapter requires to convert IDocs (Intermediate Documents) that have been sent to it to IDoc XML format. This system is defined by the sender port and the client in the IDoc control record. It is either the sender SAP system or an SAP reference system.
You will get all your calrifications at
http://help.sap.com/saphelp_nw04/helpdata/en/43/3464ec8b631c1ce10000000a1553f7/content.htm
http://help.sap.com/saphelp_nw04/helpdata/en/dc/6b80f643d711d1893e0000e8323c4f/frameset.htm
Thanks
Swarup