> For the complete documentation index, see [llms.txt](https://developers.citrusad.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers.citrusad.com/integration/reference/prerequisites.md).

# Prerequisites

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Epsilon Retail Media's documentation is now centralized with our knowledgebase!

For up to date guides, please view [this page](https://help.citrusad.com/retail-media-interface/integration/brand-pages/brand-page-retailer-integration-guide/prerequisites) in the new Integration APIs space of our documentation.
{% endhint %}

Before beginning the Brand Pages integration, ensure the following requirements are in place:

## Required Setup

* Existing Epsilon RMN Platform Access – You must have an active Epsilon RMN account with platform access.
* Catalog ID – Identifier for the retailer’s existing product catalog, provided by Epsilon as part of the RMN onboarding process and reused for Brand Pages.
* URL Configuration – The full brand page base URL is configured during onboarding and stored in the Retailer Style Guide (e.g., `<https://retailer.com/brand/>`).
* Reverse Proxy Infrastructure – Capability to set up reverse proxy for seamless integration, including the Epsilon-assigned tracking hostname (`https://[region]-tracking.rmn.dotomi.com/`) for routing browser tracking requests.
* HTTPS/TLS 1.2+ Support – Required for secure communication and tracking.
* Style Guide Information – Brand colors, fonts, and styling requirements collected during onboarding.
* Template Creation – Completed during onboarding process with Epsilon team.

## Before You Start Checklist

* [ ] Epsilon RMN platform access confirmed.
* [ ] Catalog ID received from Epsilon.
* [ ] URL prefix structure agreed upon.
* [ ] Reverse proxy capability verified.
* [ ] HTTPS/TLS 1.2+ infrastructure in place.
* [ ] Tracking hostname received from Epsilon.
* [ ] Style guide information provided to Epsilon.
* [ ] Brand page templates created and approved.

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