Create one SKU model
Every warehouse should refer to the same product, variant and SKU definitions.
Track stock by location
Operators need location-level on-hand, reserved and available quantities.
Record transfers as movements
A transfer needs an origin, destination, quantity and status.
Connect fulfillment allocation
The warehouse chosen for an order affects delivery time, shipping cost and workload.
Define allocation rules
Warehouse choice should consider stock availability, delivery promise, shipping cost and operational workload. Even a simple rule is more reliable than ad-hoc manual selection.
Review slow and fragmented stock
Multi-location growth can spread small quantities across too many warehouses. Reporting should highlight fragmented inventory, repeated emergency transfers and locations that consistently run out first.
Every event should remain connected to the product, contact or transaction that created it. That is what lets ERP explain a number instead of only displaying it.