> 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/asset-hierarchy/assets/tolerances.md).

# Asset Tolerances

Add tolerances for a specific process variable for an asset.

## Overview

Tolerance refers to the acceptable amount of variation or deviation from a specified dimension, measurement, or value in engineering and manufacturing. Tolerance is used to account for manufacturing variability, material properties, and other factors that can affect the accuracy of a product or component.

## Create an Asset Tolerance

{% hint style="info" %}
Go to ***Settings > Asset Hierarchy > Assets.*** Then **select the relevant Asset**, locate the **Asset Tolerance** panel, and click to open.
{% endhint %}

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

<figure><img src="https://352909507-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FrNT40XJFAFlAhUX8CcQS%2Fuploads%2FrDpy9DSIm7odki1f3p41%2Fimage.png?alt=media&amp;token=25afe9a0-4af9-49af-a2af-c8ac0562a081" alt="Tolerances panel on the asset page showing action buttons including Create"><figcaption></figcaption></figure>
{% endstep %}

{% step %}
In the modal, fill in the required tolerance fields:

<figure><img src="https://352909507-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FrNT40XJFAFlAhUX8CcQS%2Fuploads%2FCDwh81a8k8CnCS22eElU%2Fimage.png?alt=media&amp;token=2f53f418-1552-4c7b-8316-f6899ff3b5c6" alt="Create Asset Tolerrnace modal displaying input fields for Assets, Process Variable, Limits, and Target" width="258"><figcaption></figcaption></figure>
{% endstep %}

{% step %}
Click **Save and close**.
{% endstep %}
{% endstepper %}

### Fields

| Name                | Description                                       |
| ------------------- | ------------------------------------------------- |
| Process Variable \* | Select the process variable to set the limits to. |
| Lower Limit         | Enter the Lower limit value.                      |
| Target              | Enter the target value.                           |
| Upper Limit         | Enter the upper limit value.                      |
| Upper Warning Limit | Enter the upper warning limit value.              |
| Lower Warning Limit | Enter the lower warning limit value.              |