2


Receive
PO
Send PO Ack
Send PO Response
PO
Request
PO
Acknowledgement
PO
Response
Seller-Participant “B”
#a
#b2
#c
Translate
Transform
To ERP
From ERP
#b1
#d
Orchestration: Seller’s
observable behavior
and Implementation
Seller’s Impl
Seller’s Contract