> For the complete documentation index, see [llms.txt](https://docs.2checkout.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.2checkout.com/soap-api-reference/soap-api-6.0/api-requests/subscription-churn-prevention-campaigns/accept-enrollment-campaign-discount.md).

# Accept enrollment campaign discount

Use the **acceptEnrollmentCampaignDiscount** method to enable automatic renewal (AR) for a subscription and apply the discount of an enrollment campaign. On a successful call:

• Automatic renewal is enabled for the subscription.

• A custom renewal price is created from the campaign discount.

• If the subscription already had a discount from a previous campaign, the new discount replaces it. Discounts do not stack.

• The LICENCE\_AR\_ENROLLMENT\_CAMPAIGN\_ACCEPTED license change notification (LCN) is dispatched, if enabled.

The method re-validates the campaign server-side every time, so you do not need to call getEligibleEnrollmentCampaigns first. If the campaign expired between your calls, the request fails and automatic renewal stays disabled.

## Request parameters

<table><thead><tr><th width="201.199951171875" valign="top">Parameter</th><th valign="top">Type / Description</th></tr></thead><tbody><tr><td valign="top"><code>sessionID</code></td><td valign="top"><strong>Required (string)</strong><br>Session identifier, the output of the <strong>Login</strong> method. Include <code>sessionID</code> into all your requests. 2Checkout throws an exception if the values are incorrect. The <code>sessionID</code> expires in 10 minutes.</td></tr><tr><td valign="top"><code>SubscriptionReference</code></td><td valign="top"><strong>Required (string)</strong><br>Unique, system-generated subscription identifier.</td></tr><tr><td valign="top"><code>CampaignCode</code></td><td valign="top"><strong>Required (string)</strong><br>The code of the enrollment campaign whose discount you want to accept.</td></tr></tbody></table>

### Request sample

```php
<?php

$vendorCode = 'YOUR_VENDOR_CODE';
$apiKey     = 'YOUR_API_KEY';
$date       = gmdate('Y-m-d H:i:s');
$hash       = hash_hmac(
    'md5',
    strlen($vendorCode) . $vendorCode . strlen($date) . $date,
    $apiKey
);

try {
    $client = new SoapClient(
        'https://api.2checkout.com/soap/6.0?wsdl',
        ['cache_wsdl' => WSDL_CACHE_NONE]
    );

    $sessionID = $client->login($vendorCode, $date, $hash);

    $subscriptionReference = '351D8F557E';
    $campaignCode = 'UGPPKKJY5L1LHBFPHKQ3';

    $result = $client->acceptEnrollmentCampaignDiscount($sessionID, $subscriptionReference, $campaignCode);
    var_dump($result);
} catch (SoapFault $e) {
    echo 'SoapFault: ' . $e->getMessage() . PHP_EOL;
}

```

## Response parameters

| Type        | Description                                                                    |
| ----------- | ------------------------------------------------------------------------------ |
| **Boolean** | **true** or **false** depending on whether the changes were successful or not. |

## Error codes

| Error code                                  | Description                                                               |
| ------------------------------------------- | ------------------------------------------------------------------------- |
| **INVALID\_CAMPAIGN**                       | The campaign code is invalid, unknown or expired.                         |
| **ALREADY\_REGISTERED\_ENROLLMENT**         | The subscription already has an active enrollment campaign.               |
| **ALREADY\_REGISTERED\_CANCELLATION**       | The subscription already has an active churn campaign.                    |
| **ALREADY\_REGISTERED\_CANCELLATION\_SAME** | The subscription already has this same churn campaign active.             |
| **INVALID\_SUBSCRIPTION\_REFERENCE**        | The subscription reference is invalid or belongs to a different merchant. |


---

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