B2B: EDIFACT to Idoc

Hello All,

I have to implement a EDI to Idoc scenario using SAP B2B modules where 850 EDI message will be coming from 10 different partners and then i have to create Idoc in ECC system. I am referring below blog:

http://scn.sap.com/community/b2b-integration/blog/2012/09/27/b2b-edi-inbound-step-by-step-configuration

So my query is:

1) How many interfaces do i need to configure? 10 different dummy EDI separator interfaces + 10 different EDI 850 to Idoc scenario (for each Partner)?

Please confirm

Thanks

Amit Srivastava