Latest revision as of 21:49, 26 January 2023

About this Module

The 2CheckOut payment gateway allows you to receive one-time and recurring payments, issue refunds, and other features.

Supported Features

Adding the 2CheckOut Payment Gateway

To set up the 2CheckOut payment gateway in WHMCS:

1. Go to the appropriate location for your version of WHMCS:
   • For WHMCS 8.0 and later, go to Configuration () > Apps & Integrations or Addons > Apps & Integrations.
   • For WHMCS 7.10 and earlier, go to Setup > Products/Services > Payment Gateways and choose All Payment Gateways.
2. Click 2CheckOut.
3. Check Show on Order Form to display this payment method in the Client Area during checkout.
4. Optionally, enter a new display name.
5. Enter your vendor account number. You can find the vendor account number in your 2CheckOut account by clicking the gear icon and copying the Merchant Code value.
6. Choose your desired checkout style. We recommend always selecting Standard Checkout. For more information, see Checkout Style.
7. Enter your API username and password. You can create these in your 2CheckOut account:
   1. Go to Settings > Manage User Access > View Roles > Add Role and enable Manage api access.
   2. Go to Settings > Manage User Access > View Users > Add User and create a new user with the role you just created.
8. For enhanced security, enter a secret word. You can create the secret word in your 2CheckOut account:
   1. In your 2CheckOut account, navigate to "Integrations".
   2. Copy the INS Secret Word or generate a new one. The secret word is case-sensitive and can only contain the letters a-z.
9. Select a Recurring Billing setting. For more information, see the section below.
10. Check Skip 2CO Fraud Check to prevent 2Checkout from performing their fraud checks on payments. If a payment in WHMCS is later determined to be fraudulent, manual action would be required to reverse the payment in WHMCS and suspend any services.
11. If you use multiple currencies, set Convert To For Processing to the value of the currency your 2Checkout account. For example, if your 2Checkout account is in USD, the Convert To For Processing setting must also be USD.
12. Click Save Changes.

Checkout Style

The 2CheckOut module allows you to select between Inline Checkout and Standard Checkout checkout style options. However, 2Checkout has deprecated their legacy inline checkout style and it is no longer available.

• 2Checkout will use the standard checkout style regardless of your Checkout Style setting.
• We recommend always selecting Standard Checkout.
• We plan to remove this setting in a future version.

Recurring Billing

When you configure recurring billing, you can select the following options:

• Offer Recurring & One Time Payments — Provide both recurring and one-time billing options.
• Offer Recurring Only — Only provide a recurring option. This option will only appear when there is a recurring item on the invoice and the invoice is not overdue.
• Offer One Time Only — Only provide a one-time option. This option will not allow automatic recurring payments.

If you choose Offer One Time Only, you must configure it in your 2CheckOut account:

1. Log in to your 2CheckOut account.
2. Go to the Integrations tab.
3. To set the 2CheckOut callback process to automatically mark invoices paid:
   1. Check Enable INS and Enable global URL.
   2. In the Global URL field, enter https://www.example.com/whmcs/modules/gateways/callback/tco.php, where https://www.example.com/whmcs/ is the URL of your WHMCS installation.
4. To configure Direct Return to return clients to your WHMCS installation after payment:
   1. Under Redirect URL in the Approved URL field, set the URL to https://www.example.com/whmcs/modules/gateways/callback/2checkout.php, where https://www.example.com/whmcs/ is the URL of your WHMCS installation.
5. Click Update.

Demo Mode

In order to use demo mode, set the Demo Setting in your 2CheckOut account to Parameter under Account > Site Management. Then, in WHMCS, enable demo mode by checking the checkbox at Configuration () > System Settings > Payment Gateways or, prior to WHMCS 8.0, Setup > Payments > Payment Gateways.

When you use demo mode, all callbacks from 2CheckOut will fail with the error MD5 Hash Failure if a secret word is specified. This is done intentionally by 2Checkout to protect sellers of digital goods from fraudulent purchases through their demo mode.

Troubleshooting

MD5 Hash Failure

An MD5 Hash Failure error under Billing > Gateway Log indicates that the secret word in Configuration () > System Settings > Payment Gateways or, prior to WHMCS 8.0, Setup > Payments > Payment Gateways does not match the secret word in the 2CheckOut control panel.

To resolve this issue, ensure that the secret word in 2Checkout contains only letters and numbers and does not contain any invisible trailing spaces. Then, update the secret word value in WHMCS to match the value in your 2Checkout account

Error Code PE101

This error indicates that there are invalid details in the 2CheckOut module settings, such as an incorrect Vendor Account Number value. Ensure that you entered the details correctly in the 2CheckOut gateway configuration.

A PE101 error can also be due to an account-level issue that you must resolve with 2CheckOut:

• Account is not approved to sell.
• Account has been closed.

It is possible that 2CheckOut is not allowing the use of inline checkout. Changing to standard checkout can resolve this.

Authentication failed

This error at Billing > Gateway Log indicates that the secret word, API username, or API password are incorrect. You can update these at Configuration () > System Settings > Payment Gateways or, prior to WHMCS 8.0, Setup > Payments > Payment Gateways.

For further information on this configuration, see above.