> 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

## 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>


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://help.daasity.com/core-concepts/audiences-reverse-elt/pushing-audience-data-to-targets/facebook-ads/target-endpoint-documentation.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.