Hello how to integrate the following .
I will be sending IDOcs from one SAP ECC system to PI and to another PI and ECC systems.
SAP ECC1(Custom idocs)
----->SAP ECC2(Idoc to be posted)
Change status of idoc back in ECC1.
I will not be using BPM and how to connect two PI systems ...how they communicate ?
Any hints or documentation will be helpful.