Hi @getsuga ,
you need to import custom Configuration Items in your SCSM CMDB, right?
This will help you:
Part 1: How to Import a Custom Configuration Item into Microsoft Service Manager
https://www.youtube.com/watch?v=CdOp4JyC0yE
Adding and Importing Configuration items in System Center 2012 Service Manager
https://hub.packtpub.com/adding-and-importing-configuration-items-system-center-2012-service-manager/
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Regards
Stoyan Chalakov