# Target Endpoint Documentation

## Overview

The Daasity Audience feature uses the [Facebook Customer File Custom Audiences](https://developers.facebook.com/docs/marketing-api/audiences/guides/custom-audiences) part of the [Marketing API](https://developers.facebook.com/docs/marketing-apis/overview) to build a custom audience.  Daasity breaks the list created via the Audience into blocks of 10,000 records per Facebook requirements to update the custom audience

## Customer File Custom Audiences

Daasity uses the output from the report / query to generate a file, breaks this into multiple files that Facebook can ingest and then loads this into Facebook using this endpoint

* Endpoint: <https://developers.facebook.com/docs/marketing-api/audiences/guides/custom-audiences>
* Frequency: Daily (available to run On-Demand via the UI)

<table><thead><tr><th width="227.33333333333331">Daasity UI Section</th><th width="280">Daasity Property</th><th>Facebook Property</th></tr></thead><tbody><tr><td>General</td><td>Facebook Ad Account ID</td><td>&#x3C;AD_ACCOUNT_ID></td></tr><tr><td>General</td><td>Facebook Custom Audience ID</td><td>audience_id</td></tr><tr><td>Data Mapping</td><td>Source</td><td>properties</td></tr></tbody></table>