> For the complete documentation index, see [llms.txt](https://help.daasity.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.daasity.com/core-concepts/audiences-reverse-elt/pushing-audience-data-to-targets/facebook-ads/target-endpoint-documentation.md).

# Target Endpoint Documentation

This page outlines the technical details of how Daasity pushes data into Facebook using the Customer File Custom Audiences portion of the Marketing API to build and target custom audiences in Facebook

## 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>