Don’t worry about it.
It’s amazon received your inventory and doing its verification.
It means these units are in amazon warehouses but still in FC process and not available for sale.
There are three reasons your inventory could be in reserved status.
- Customer orders: These units are used to fulfill customer orders.
- FC transfer: These units are being transferred from one fulfillment center to another.
- FC processing: These units have been sidelined at the fulfillment center for additional processing,
The Reserved Inventory report report explains all these in detail. Plus, you can look up the status by ASIN or FNSKU.