As already advised by LinusH, if your environment supports multiple levels of SAS Configuration you can use this a differentiator. So for example for First level of config, Lev1, second level Lev2 and so on.
However its not mandatory to use lev1 before lev2, it depends upon the architecture agreed upon. I would suggest you to reach out to your SAS Architecture Team to understand better in your organization.
Thanks,
Anand!