Safety stock to all products

Hello community.

I’m trying to set the safety stock of all my products to a fixed number. I’ve tried using the inventoryAdjustQuantities mutation for all my products but it didn’t have any effect (they remained 0 for the unavailable).

Does anyone have an idea of how I can put a safety stock quantity without doing it one by one in the shopify admin. It can be either via Api or in the administrator, any idea helps.

what is your use cases for this?