# Context

> Where in the workflow the capture happened, and what it should be matched against.

- **Page** - https://iotready.com/academy/traceability-foundations/context
- **Course** - [Traceability Foundations](https://iotready.com/academy/traceability-foundations.md)
- **Lesson** - 3 of 3
- **Level** - Foundation
- **Time** - 18 min

## Context is the stage

Identity and quantity work the same way at every stage. What changes is which
stage you are in and what the capture is checked against.

**Receiving** - Checked against the purchase order

1. Identify
2. Measure
3. Match

**Processing** - Checked against the recipe or job

1. Pick
2. Transform
3. Record

**Dispatching** - Checked against the sales order

1. Pack
2. Verify
3. Load

## Putting the three together

> Identity plus Quantity plus Context is Truth. Drop any one of them and you are
> back to a number somebody typed.
>
> \- The house model