Best Practice of using ERM (Role Expert) in Landscape

Hello,
Can anyone tell me what is the best practice (choice) of using ERM in the SAP landscape?
1. Creating a role in DEV system using ERM and using SAP standard transport process to transport role to QAS and PRD systems.
OR
2. Creating a role in all systems in ladscape (DEV, QAS and PRD).
Please share if you have any best practice implementation scenarios.
Appreciate for the help.
Thanks
Harry.

Harry,
The best practice is to follow Option 1. You should never directly create a role in Prod system. This is what SAP recommends as well.
Alpesh

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