> For the complete documentation index, see [llms.txt](https://help.tillit.cloud/tillit/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.tillit.cloud/tillit/knowledge-base/setting-up-tillit/material-definition/material-tolerance.md).

# Material Tolerance

Setting a tolerance allows you to define operational limits for a material.

### Overview

Tolerance are added in the configuration section but can be associated to the an material through the material tolerance table.

## Navigation

{% hint style="info" %}
Go to ***Settings > Material Definition > Material***. Then select the relevant [Material](/tillit/knowledge-base/setting-up-tillit/material-definition/material.md). Locate the ***Tolerance panel***, then click to open.
{% endhint %}

<figure><img src="https://352909507-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FrNT40XJFAFlAhUX8CcQS%2Fuploads%2FRnqMJs7BDIHO6XGNKe2S%2Fimg.png?alt=media&amp;token=ff352f86-f983-4b4e-8db0-dfa2fea36233" alt="Left navigation sidebar of thew TilliT plataform with the &#x22;Material Definition&#x22; menu expanded, highlighting the &#x22;Materials&#x22; option. And the Material page highlighting the &#x22;Tolerances&#x22; panel"><figcaption></figcaption></figure>

## Creating an Material Tolerance

On the ***Tolerance panel*** of the relevant material.

{% stepper %}
{% step %}
Click **Create**.

<figure><img src="https://352909507-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FrNT40XJFAFlAhUX8CcQS%2Fuploads%2FtrPC6BpvzHiiPOVxS69J%2Fimage.png?alt=media&amp;token=3f44f44f-85f5-469c-9e3f-5cf74971de58" alt="Tolerances panel interface highlighting the Create action button"><figcaption></figcaption></figure>
{% endstep %}

{% step %}
Fill in the required fields.

<figure><img src="https://352909507-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FrNT40XJFAFlAhUX8CcQS%2Fuploads%2FcXGteoAZqW73nufaXyO1%2Fimage.png?alt=media&amp;token=0fd47842-5b2f-417c-b32b-97c64f585e39" alt="&#x22;Create Material Tolerance&#x22; pop-up window"><figcaption></figcaption></figure>
{% endstep %}

{% step %}
Click **Save and close** (or **Save and open**) to finalise.
{% endstep %}
{% endstepper %}

### Fields

| Name                | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| ------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Material \*         | Pre-selected based on the material you are currently adding the tolerance to.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| Process Variable \* | <p>Select an existing process variable from the drop-down menu, or click the <strong>+</strong> button to create a new one. <em>To learn more about managing them, see</em> <a href="/tillit/knowledge-base/setting-up-tillit/configuration/process-variable.md"><em>Process Variable</em></a><em>.</em></p><p><img src="https://352909507-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FrNT40XJFAFlAhUX8CcQS%2Fuploads%2Fd3swGracfXagBz8iRAZ7%2Fimg.png?alt=media&amp;token=e5626d75-f65e-4f80-9b6f-97860d611725" alt="" data-size="original"></p> |
| Lower limit         | The minimum acceptable value for this tolerance.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| Target              | The optimal or ideal target value.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| Upper Limit         | The maximum acceptable value for this tolerance.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| Upper Warning Limit | The threshold value that triggers an upper warning before reaching the upper limit.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
| Lower Warning Limit | The threshold value that triggers a lower warning before reaching the lower limit.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |

{% hint style="info" %}
See the [example](/tillit/knowledge-base/setting-up-tillit/material-definition/material-tolerance/example-of-material-tolerance.md) section to see how to use Tolerances with materials
{% endhint %}