# Worldpay
**STEP 1**
Go to **Gateways** | **Gateway Integrations** and select the Worldpay tile. Click on **+Activate**.
Enter the following information specific to Worldpay:
* **merchantCode** - Obtained from Worldpay
* **username** - Obtained from Worldpay
* **password** - Obtained from Worldpay
* **rebillMerchantCode** - Obtained from Worldpay (required to process rebills)
* **rebillUsername** - Obtained from Worldpay (required to process rebills)
* **rebillPassword** - Obtained from Worldpay (required to process rebills)
* **secure3DS** - enable native 3D Secure processing
* **flexAPIKey** - Obtained from Worldpay (required if **secure3DS** is enabled)
* **flexAPIId -** Obtained from Worldpay (required if **secure3DS** is enabled)
* **flexOrgUnitId** - Obtained from Worldpay (required if **secure3DS** is enabled)
Click the green **Create Gateway** button to save your changes and create the gateway
**STEP 2**
Assign the gateway to campaign products
**STEP 3**
For Secure 3DS the checkout and upsell pages must support 3DS redirects
[Basic 3DS Instructions](https://help.checkoutchamp.com/crm/gateway-setup/direct-api-3ds-instructions)
**STEP 4**
**Worldpay Setup**
{% hint style="info" %}
Contact Worldpay support to enable these features on your account:
1. Return AVS & CVV as result code instead of result description in the API response
2. Tokenization
{% endhint %}
**Worldpay Webhook Configuration**
{% hint style="info" %}
Webhooks are mandatory for Worldpay
{% endhint %}
**Merchant Channels**
```
Protocol: http
Active: yes
Content: xml
Address: https://api.checkoutchamp.com/billers/worldpay/notification/
Method: POST
Client Certificate: no
Send Idempotency Key: no
```
**Merchant Channel Events**
Under "http", Please choose the following events.
```
CANCELLED
CAPTURED
CAPTURE_FAILED
```
