is a very good resource for SAM, especially processes. You can buy Rory's process kit which will cover what you need and more. You might be able to find a sample of these processes in the whitepaper section if you're on the fence about shelling out money for processes. You'll also find a template of how to capture this information in excel.
Rory has also covered this specific process a while back on an article in ITAM Review - it might have evolved since then.https://www.itassetmanagement.net/201...
Hope this helps.