HI Farooq,
Yes it is possible to do this Business Process documentation automatically and you don't need to create or add processes/steps manually in Solar01 except custom processes.
This automatic documentation is done via RBPD Reverse business process documentation
https://websmp210.sap-ag.de/rbpd
secondly then check the blog where it talk about creating TBOMs for these transaction mapped to solman project in solar01 etc
hope this should clarify
Thanks
Prakhar