## Zoho Billing - Product, solutions, integrations, support, and resources Index

Access the complete documentation index at:
https://www.zoho.com/es-mx/billing/llms.txt

Use this file to discover all available documentation pages before proceeding.

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# If I have to configure a payment gateway, what are the pre-requisites?

Below are the pre-requisites for configuring a payment gateway.

*   CIM needs to be enabled for Authorize.Net.
*   IPN notification for Payments Pro.
*   Notification URL for 2Checkout.