Wait, it's YOUR own device?? Alarm bells
I've built an asset registry in a past job - I took serial numbers down of our laptops, but that was the company's property and all this did was sit in their register. Tip: finance didn't care about people using their own devices, our insurance and our accounts had nowt to do with that; it was a lookout for IT / data governance
I'm sure it might have elements of data management. It begs a lot of questions - their data governance is already iffy IMO if their WFH solution allows data on home machines. And serial number is such a weird request - professionally as an IT dude I've needed usernames, IP addresses and even MAC addresses but never the serial number.
I'm thinking: if it's asset management / financial, it shouldn't include what the company doesn't pay for. If it's IT, it's a bit of a weird thing to collect, and like with my gut assumption of "Data panic too little too late", bereft of a convincing explanation I'd not provide it
I reckon it's a hardware audit that has been mangled by overthink from HR / middle management