# Marketplace cross-reference lookups

## Introduction

The **cross-reference lookups** page includes a range of prebuilt cross-reference lookup tables. These perform a range of conversions which you can apply via a [map field transformation](https://doc.wearepatchworks.com/product-documentation/process-flows/building-process-flows/process-flow-shapes/standard-shapes/map-shape/working-with-field-transformations/available-transform-functions).  

## Browsing cross-reference lookups

Having selected the **cross-reference lookups** option from the marketplace, you can browse and install cross-reference lookup tables:

<figure><img src="https://2440044887-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FLYNcUBVQwSkOMG6KjZfz%2Fuploads%2FNAu4APsqKQ0Sta7JORKh%2Fmarketplace%20-%20cross%20refs.png?alt=media&#x26;token=c0b87298-0ccf-4d2f-a8d1-960167d4b0be" alt=""><figcaption></figcaption></figure>

Tables are displayed over a series of pages, which you can step through using page numbers at the bottom of the marketplace. Each item is displayed with a name, description and an [install](https://doc.wearepatchworks.com/product-documentation/process-flows/cross-reference-lookups/installing-cross-reference-lookups) option.

## Related information

For all information about working with cross-reference lookups, please see our [Cross-reference lookups](https://doc.wearepatchworks.com/product-documentation/process-flows/cross-reference-lookups) section.