Deissner Katrin, Good read..Thanks for sharing this information, quite helpfull 

Thanks Naga, a good read/information.

Asif, Indeed It is informative and helpful, sure will help us with a hands on exercise using some example data for provided ETL flows. thanks

Good read, Just question, Ina  typical SAP Deployment activate methodology, when do you think user security mapping should be done for a greenfield implementation project, I meant design, explore or later phases?