some yrs back, we can download pdf from "service.sap.com " for solution manager content documents for SAP TM.
Service.sap.com is retired now. So from where we can download the solman content documentation for SAP TM. If you can tell the procedure currently in place. iam not talking about best practices but solman content documentation which involves guides, scenario descriptions etc.
I have S user id.
I didn't find what are you looking for. I also needed to find something what you are looking right now, but could not.
BTW, you may start with attached one with basic process flow and steps.