---
alias: modules-routing-and-dispatching-reasons-tutorial-defect-reason
description: "Configure a Defect reason, define repair actions, and review the scenario for recording and handling defects."
---

# Defect Reason

A **Defect Reason** tracks quality issues or anomalies found on **Materials** during production. Unlike a **Loss Reason**, a **Defect Reason** does not reduce **Material** quantity automatically.

**Defect Reasons** help you:

- Track specific quality issues on **Materials**.
- Record defect location and severity.
- Support detailed quality analysis.
- Improve traceability of quality problems.
- Enable process improvement initiatives.

| Aspect | Defect Reason | Loss Reason |
| --- | --- | --- |
| Purpose | Track specific quality issues | Record quantity reduction |
| Quantity impact | Does not change quantity automatically | Reduces **Material** quantity |
| Location tracking | Can record an exact location | Does not track location |
| Multiple records | Supports multiple defects per **Material** | Supports multiple losses per **Material** |
| Main use case | Quality analysis and traceability | Yield calculation and scrap tracking |

Recording a defect does not reduce **Material** quantity automatically. If the **Material** must be scrapped because of the defect, mark it as `Not Fixable`.

## Configure a Defect Reason

1. Open the **Reason** module and create a new **Reason**.
1. Select the **Defect** type.
1. Optionally select a category from [[reasoncategory-lt]].
1. Select **Create**.

    ![Defect reason configuration page](../images/reasons-tutorial-68.png)

1. Define the repair actions by selecting **Manage Repair Actions**.

    ![Manage Repair Actions option](../images/reasons-tutorial-69.png)

1. Configure the repair actions:
    - Enter a name for the repair action.
    - Optionally enter a description.
    - Set the replacement mode to `Allowed`, `Not Allowed`, or `Required`.
    - Select **Update**.

    ![Repair actions configured for the defect reason](../images/reasons-tutorial-70.png)

1. Assign the **Defect Reason** to the `Coating` **Step** and confirm that the repair actions are visible.

    ![Repair actions visible after assigning the defect reason](../images/reasons-tutorial-71.png)

1. If the part replacement mode is **Required**, define the default **BOM** at the **Product** level.

    ![Product configuration with the default BOM](../images/reasons-tutorial-72.png)

1. Define the **Defect Repair Policy** at the **Product** level.

    ![Defect repair policy on the product](../images/reasons-tutorial-73.png)

    ![Product policy details for defect repair](../images/reasons-tutorial-74.png)

## Scenario: Record and Manage Defects

1. Open the `Engine Block H08-P9.011` **Material** details page.
1. Go to **Views** > **Defects**.
1. Select **Record Using Picture**.

    ![Defects page with the Record Using Picture action](../images/reasons-tutorial-75.png)

1. Upload a picture and select **Next**.
1. Select the **Defect Reason**. The list shows only **Reasons** of the **Defect** type.
1. Optionally select a part number if the replacement was planned in the part replacement mode.
1. Optionally add a remark and select **Record**.

    ![Defect recording wizard with picture-based entry](../images/reasons-tutorial-76.png)

1. Review the available actions in the ribbon:
    - Mark the defect as `Accepted`
    - Mark the defect as `False`
    - Mark the defect as `Scrap`
    - Apply the repair action `ReplaceContaminatedArea`
    - Mark the defect as `Not Fixable`

<!-- Video filename: reasons-defects-scenario.mp4 -->
{% set video_id = '73605adbcc8c11f10ded9f2371f0c99e' %}
{% include-markdown 'includes/cloudflare_stream.md' %}