One warehouse can contain stock owned by several branches
A physical stock count answers what is on the shelf. It does not necessarily answer who can sell it. When branches purchase allocations that remain in a central warehouse, a single quantity field combines two different facts.
Keep location and ownership as separate fields. Head office needs a warehouse view, while a branch needs its allocation, committed orders, and available quantity. Both views should reconcile to the same transactions.
Define which event changes each quantity
A purchase request, confirmed payment, customer order, and warehouse dispatch are separate events. Write down which event changes ownership, which reserves stock, and which reduces physical stock. Otherwise a sale can appear to remove the same item twice.
Record the event type, item, quantity, branch, source order, and responsible operator. A correction should leave a traceable adjustment instead of silently replacing a balance.
Show reserved stock before it leaves the warehouse
Goods that have been sold but not dispatched need their own state. Without it, staff can see a shelf full of stock while the sales team sees goods that are no longer available to promise.
Bundle sales require the same discipline. Define the component quantities and test what happens when one component is unavailable. A bundle name alone is not enough to deduct inventory reliably.
Test the full chain, including exceptions
Walk a real authorized order through payment, allocation, reservation, dispatch, and warranty lookup. Then check cancellation, partial availability, refund, and a correction to the original record.
The retail distribution case on this site connects five movement categories with item-level warranty identifiers. To assess the business effect in your own operation, record reconciliation time and stock discrepancies over a consistent period before and after the change.
Prepare the first review
Bring your current stock sheet, a description of branch purchasing, and an anonymized order showing the dispatch steps. Identify who confirms payments and who can correct inventory. These details make a focused first project easier to scope.
Start with one warehouse and one clearly defined branch workflow. Expand after the team can trace an item without reconstructing its history from chat messages.