Configuring a multiple IDOC-File using BPM

Question

HI,
My scenario involves 2different idocs which are to be mapped to a file structure,the steps that i have followed in IR is ,
1.Create target MesageType
message Interfaces.
2.Create 2 Abs interfaces based on IDOC
3.Create 1 Abs for o/p of BPM.
4.Create 1 Inb for target.
Message mapping.
5.Two dummy mappings for outbound idocs to abstract idocs.
6.One multimapping(two idocs-->File)
7.One Dummy mapping for Abstract Intf(output of BPM) to target Filestructure(inbound).
Interface Mapping.
8.Two Mesage intf for changing Outbound idocs to Abstract using the dummy mapping programs)
9.One Message Intf using 2 abs Idocs to One Abs File(using the multimapping pgm)
10.one msg Intf for BPM Out --> Inb File (using the dummy mapping pgm)
Integration Process.
I have used a fork step under which there are 2 recieve steps to recieve the IDOCS and then a Transformation step that would multi-map the idocs to the file,then a send step.
Please let me know if the approach is right.
Also Could anybody please let me know what steps do i need to take in the Configuration part and should i use the wizard or should i do it manually.
the problem using the wizard is it doesnt let me choose 2 Message interfaces for the sender ie; IDOCS,
Please help me on this.Thank you waiting for a reply....)

Answer 1

John,
<i>5.Two dummy mappings for outbound idocs to abstract idocs.
7.One Dummy mapping for Abstract Intf(output of BPM) to target Filestructure(inbound).</i>
These dummy mappings are needed. As both the Abstract Message Interfaces and the Idoc / Inbound interface will use the same message type, no dummy mapping needed. In the interface determination for these, no interface mapping needs to be mnetioned.
ID.
Receiver Determaintions
1. Sender Service -- IDOC1  and Reciver Service is -- BPM. Sender Interface will be IDOC1 and Receiver Interafce will be The IDOC abs interface . No Interface mapping.
2. Sender Service --- IDOC2 and Receiver Service is -- BPM. Sender Interface will be IDOC2 and Receiver Interafce will be The IDOC abs interface . No Interface mapping.
3. Sender Service is BPM , and receiver servcice is File. Sender Interface is File Abs interface and reciver interface is the Inbound File interface.
1 Reciver Agreement for the File adapter.
Regards,
Bhavesh