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

# Traceability & hierarchy

> From Epic to Bug — how TestPulse links requirements, test cases and the defects behind failures, read-only.

TestPulse reconstructs the full chain **Epic → Feature → User Story / PBI → Test Case → Bug**, read-only, from the links already in your project.

## The links it follows

| Link                        | Direction              | Used for                                                                                                                   |
| --------------------------- | ---------------------- | -------------------------------------------------------------------------------------------------------------------------- |
| **Tested By**               | User Story → Test Case | Which tests cover a requirement — powers the [Test coverage tab](/en/work-item/test-coverage-tab) and the coverage report. |
| **Requirement-based suite** | Suite → User Story     | Maps a suite back to the story it validates.                                                                               |
| **Bug behind a failure**    | Test Case → Bug        | The defect linked to a failing test, surfaced next to its result.                                                          |

## Where it shows up

* **Traceability** in reports — the **Epic → User Story → Test Case → Bug** tree.
* **Coverage** — which requirements are covered and which are gaps.
* **On the work item** — the [Test coverage tab](/en/work-item/test-coverage-tab) reads *Tested By* to show a story's linked tests and the bug behind each failure.

<Note>A failing test with **no** linked bug is flagged as *failing-with-no-defect* — a gap worth closing, never hidden.</Note>

## Related

<CardGroup cols={2}>
  <Card title="The Test Plans model" icon="network" href="/en/concepts/model">Plans, suites, cases, points.</Card>
  <Card title="Statuses & results" icon="list-checks" href="/en/concepts/statuses">Outcomes and the execution verdict.</Card>
</CardGroup>