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

# Parts and purchasing

> Connect stock, work-order demand, vendors, purchase orders, and receipts.

Canary connects the part catalog to inventory at each location and to the work that consumes it. Purchasing adds supplier details, approval states, shipments, and immutable receipt history.

## How the records fit together

| Record              | Purpose                                                         | Inventory effect                                                       |
| ------------------- | --------------------------------------------------------------- | ---------------------------------------------------------------------- |
| Part                | Catalog identity, compatible assets, types, documents, and cost | None by itself                                                         |
| Location stock      | On-hand quantity, minimum, maximum, and area                    | Current stock at one location                                          |
| Work-order part     | Planned demand and issue stage                                  | Committed at Reserved, Kitted, or Staged; physical deduction at Issued |
| Vendor              | Supplier, contacts, and part-specific terms                     | None by itself                                                         |
| Purchase order line | Ordered part or one-off item                                    | Counts as outstanding supply while the order is active                 |
| Receipt             | Shipment allocation to a location                               | Adds part-backed quantities to stock                                   |

## Recommended setup order

1. Enable **Parts Inventory** in **Settings > Features**.
2. Create inventory locations.
3. Create parts and set stock targets per location.
4. Link parts to the assets they fit.
5. Add vendors, contacts, supplier part numbers, and supplier costs.
6. Plan and issue parts through work orders.
7. Create purchase orders and receive shipments into the correct locations.

## Understand availability

**On hand** is physical stock. **Available** subtracts quantities in Reserved, Kitted, and Staged work-order part states. Assigned demand remains visible and stays outside the committed total. Your organization can base restock status on on-hand or available quantity.

Outstanding quantities on Pending, Approved, and Partially Fulfilled purchase orders contribute to ordered supply. Completed and archived orders leave that calculation.

## Lifecycle and recovery

Parts, vendors, and purchase orders use archive and restore workflows. Historical issues, movements, receipts, and cost snapshots remain connected. Administrators can open **Settings > Features > Parts Inventory > Recovery** even while the module is off.

## Related pages

* [About parts](/help/parts/overview)
* [Work-order parts](/help/parts/work-order-parts)
* [Vendors](/help/purchasing/vendors)
* [Purchase orders](/help/purchasing/purchase-orders)