Set an external ID on fundraisers [BETA]

In some cases, you may want an easy way to assign your own ID to each fundraiser. This can, for example, allow you to:

• Match fundraisers with an event participant ID
• Match fundraisers with an external group or team ID

If you want to use the same ID for all fundraisers under a given project, you should consider using our reference code feature instead.

How to set the ID on a fundraiser

The ID can be set using a URL parameter. For example: https://subdomain.yourdomain.org/create-fundraiser/choose-type?project_id=[project-slug]&external_id=[your-id]

Please note: URL parameters are not the most stable way to do this (hence the "Beta" label), so you must understand that it may fail in some cases.

How to retrieve the ID for each fundraiser

The parameter is called external_id in our API. In the fundraiser API response, it is included as part of the partner_data object.

Alternatively, if you are on the Premium Branded plan, you can request a custom report that includes this parameter.

Updated on: 09/08/2025