> ## Documentation Index
> Fetch the complete documentation index at: https://docs.affonso.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Set Program Default Promotion URL

> Set the program-wide default promotion URL

Set the global default promotion URL. The selected URL must be active, belong to your program, and have the `all_affiliates` audience.

## Body Parameters

<ParamField body="promotion_url_id" type="string" required>The active `all_affiliates` promotion URL to use as the global default.</ParamField>

## Response

Returns the selected promotion URL. See [List Promotion URLs](/api/endpoint/program/list-promotion-urls) for the response object.

<RequestExample>
  ```bash cURL theme={null}
  curl -X PUT "https://api.affonso.io/v1/program/promotion-urls/default" \
    -H "Authorization: Bearer sk_live_your_api_key" \
    -H "Content-Type: application/json" \
    -d '{ "promotion_url_id": "promotion_url_abc123" }'
  ```
</RequestExample>