> ## Documentation Index
> Fetch the complete documentation index at: https://docs.billbasket.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Delivery dispatch & serial/HUN traceability

> Turn a BillBasket warehouse into a delivery center that ships orders with a printed Dispatch Challan, and trace any unit by serial or batch number end to end.

For businesses that ship orders out from a warehouse, BillBasket can turn
that warehouse into a **delivery center** — a place where pending orders
wait to be dispatched, with a printed challan for every shipment. Once
stock is moving, you can also trace any individual unit by its serial or
batch number to see exactly where it's been.

<Note>
  Warehouse is an optional add-on module — turn it on from Settings →
  Add-ons (Admin PIN required) if you don't see it in your menu.
</Note>

## See it on your device

<Tabs>
  <Tab title="Phone">
    <Frame>
      *Screenshot coming soon — Android phone view.*
    </Frame>
  </Tab>

  <Tab title="Tablet">
    <Frame>
      *Screenshot coming soon — Android tablet view.*
    </Frame>
  </Tab>

  <Tab title="Windows PC">
    <Frame>
      *Screenshot coming soon — Windows desktop view.*
    </Frame>
  </Tab>
</Tabs>

## Dispatching from a delivery center

Pick a warehouse to act as your delivery center, and BillBasket shows you
the pending orders and invoices waiting to ship from it. Dispatch one by
printing a **Dispatch Challan** — this flips the order's status to
"dispatched." If you need another copy later, already-dispatched orders
can have their challan reprinted on demand.

## Tracing by serial or batch number

Search by serial number (for serial-tracked products — see [Tracking
serial numbers](/customer-guide/products-and-services/serial-number-tracking))
or by batch number to see that exact unit's product details, current
warehouse location, status, and full movement history. Serial and batch
search both support scanning a barcode instead of typing. You can also
print a **HUN** (Hierarchical Unit Number) traceability label for a unit.

## Try it: Bali Electronics

<Steps>
  <Step title="Dispatching an order">
    A customer's phone order needs to ship from the Service Center
    Warehouse. Vikram Bali opens Delivery Center, finds the pending order,
    and dispatches it, printing the Dispatch Challan.
  </Step>

  <Step title="Reprinting if needed">
    His staff member Deepak later needs a spare copy of that challan for
    the courier, so he reopens the same order and reprints it.
  </Step>

  <Step title="Tracing the exact unit">
    A few days later, Vikram looks up that phone's exact serial number in
    the traceability search to confirm it was dispatched from the Service
    Center Warehouse and delivered as expected.
  </Step>
</Steps>