CPS SAP Inbound stays on status "Connecting"

Hello Experts,

I have been trying to setup CPS connection with Solution Manager.

When trying to start the SAP Inbound, it starts connecting but won't reach status "running".

I have already taken care of authorizations of the communication user in SolMan, I believe (before that, the process would fail, and status would be "shutdown"). I have no indications of what could be missing.

Do you have any idea ?

Thanks for your help,

Roger.