Name the system that owns the count
Two apps both “updating inventory” is how you oversell. We pick the source of truth for stock, for orders, and for invoices, then sync the others from that decision.
The store says an item is in stock. The warehouse says it shipped yesterday. Accounting has a third number. Tervexa connects orders, inventory, and the books so those counts come from one flow.
Talk through this buildTwo apps both “updating inventory” is how you oversell. We pick the source of truth for stock, for orders, and for invoices, then sync the others from that decision.
A paid order creates the fulfillment task. A shipment decrements stock and can create or update the accounting record. Exceptions — partial ships, cancellations, refunds — get a visible queue.
Shopify or another storefront, a warehouse app, spreadsheets, and QuickBooks are common. We use their APIs where they exist and a controlled file exchange where they do not.
Next step
Tell us what the staff do by hand today. We will map a first release with a scope and a price before any build.