Supplier Self Registration (ROS) / Bid Decoupled

Hi experts,

We are on SRM 7 EHP2 with SUS, and ECC 6 EHP6. We use Order Collaboration scenario (MM-SUS) and also using Bid Decoupled Scenario. In this scenario how is the complete process for Supplier Self Registration.

Could anyone give me the process details taking into account in wich system what are the activities to do?

Could you explain to me the relation between BP created? SUS - SRM - ECC?

Appreciate if any of you can give me some advice on this matter

Best regards,

Nurais