---
title: Custom referral link parameter
slug: custom-referral-link-parameter
description: By default, Roster uses the rstr query string parameter in your Ambassadors' referral links.
docTags: 
createdAt: 2024-12-04T21:07:24.008Z
---

By default, Roster uses the `rstr` query string parameter in your Ambassadors' referral links. This parameter helps us uniquely identify which Ambassador's link was clicked and attribute sales accordingly.

For instance, if an Ambassador has a Smart Link like:

:::BlockQuote
https\://rstr.co/bellenutrition/amanda
:::

it will typically redirect to a URL on your website such as:

:::BlockQuote
https\://bellenutrition.com/?rstr=amanda
:::

For most brands, the default `rstr` parameter works perfectly. However, we understand that some brands may have specific needs or existing systems that utilize a different query string parameter for referral tracking (e.g., ref, aff\_id, code, etc.).

If your brand requires the use of a custom parameter instead of the default `rstr`, Roster can accommodate this.

To discuss changing your referral link parameter, please contact our support team at [support@getroster.com](mailto\:support@getroster.com). Our team will work with you to understand your requirements, configure the custom parameter for your account, and outline any next steps you may need to take to ensure seamless tracking.