Customer Invoicing {#templates-matrix-customer-invoicing}
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Customer Invoicing allows merchants to create and manage invoices, send customers links to invoices, securely collect payments for invoices.

Prerequisites
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`Unified Checkout Integration` must be enabled for the merchant. Before `Unified Checkout Integration` can be enabled for a merchant, it must be enabled at the portfolio level.  
To enable `Unified Checkout Integration` at the portfolio level, talk to your sales representative.  
Customer Invoicing must be enabled at the portfolio level before in can be added to merchant accounts. To enable at Customer Invoicing at the portfolio level, contact your sales representative.

Enabling Customer Invoicing on the Business Center
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Before you can add Customer Invoicing, Unified Checkout must be added to the merchant account. To add Unified Checkout, see: [Unified Checkout Integration](/docs/vas/en-us/boarding/user/all/ebc/boarding-user/templates-matrix-intro/templates-matrix-unified-checkout.md "").

1. Navigate to the Merchant Details Page within Portfolio Management.
2. Click the Add products button.
3. Select Customer Invoicing, and click the Add button.

Customer Invoicing should appear on the Merchant's product list.