# Installing cross-reference lookups

## Introduction

Before a standard Patchworks **cross-reference lookup** can be [applied in field mapping transformations](https://doc.wearepatchworks.com/product-documentation/process-flows/cross-reference-lookups/using-a-cross-reference-lookup-in-field-transformations), it must be installed. Follow the steps below to complete this task.

## The steps

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<summary><img src="https://2440044887-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FLYNcUBVQwSkOMG6KjZfz%2Fuploads%2FpLMO12yvTCxi9PorCt53%2Ficons8-film.svg?alt=media&#x26;token=e59864bc-2d97-4f98-966c-a083c18e60db" alt="" data-size="line"> Show me</summary>

![](https://2440044887-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FLYNcUBVQwSkOMG6KjZfz%2Fuploads%2FWBFJQFv8V0m3zpJg9nRO%2Fdemo%20install%20lookup.gif?alt=media\&token=88aa1141-7f4c-473d-a454-a43b1f59efce)

</details>

**Step 1**\
Log into the Patchworks dashboard, then select **process flows** <mark style="color:orange;">\~</mark> **cross reference lookups** from the left-hand navigation bar.&#x20;

**Step 2**\
Move down to the **marketplace** section and find the cross reference lookup that you want to install - you can use the search field or step through pages to find your required item. For example:

<figure><img src="https://2440044887-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FLYNcUBVQwSkOMG6KjZfz%2Fuploads%2FtxPhemkAVS4Bes2cMlc0%2Fcross%20ref%20lookup%202.png?alt=media&#x26;token=718aee2b-1979-40d1-aef1-677a7f6ba1b5" alt=""><figcaption></figcaption></figure>

**Step 3**\
Click the **install** button associated with the cross-reference lookup that you want to use. The item is installed and added to your **installed** section at the top of the page. This cross-reference lookup is now [ready for use](https://doc.wearepatchworks.com/product-documentation/process-flows/cross-reference-lookups/using-a-cross-reference-lookup-in-field-transformations).