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

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

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

# Transactions

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*   [Open in ChatGPT (opens in new tab)](https://chatgpt.com/?prompt=Analyze+the+content+of+https%3A%2F%2Fwww.zoho.com%2Fen-ng%2Fbilling%2Fkb%2Ftransactions%2F+and+understand+it+thoroughly+so+I+can+ask+questions+about+it.)
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*   [If I have to configure a payment gateway, what are the pre-requisites?](/en-ng/billing/kb/transactions/payment-gateway-pre-requisites.html)
*   [Do you support one time transactions?](/en-ng/billing/kb/transactions/one-time-transactions.html)
*   [Do I need to change my payment gateway or can I continue with the existing one?](/en-ng/billing/kb/transactions/pg-continue.html)
*   [How do I refund a credit note?](/en-ng/billing/kb/transactions/refund.html)
*   [If my customer pays his invoice via ACH payment will it get closed automatically?](/en-ng/billing/kb/transactions/ach.html)
*   [Can my customers enter their bank details directly for ACH transactions?](/en-ng/billing/kb/transactions/bank-details.html)
*   [Does Zoho Billing store customer’s credit card details?](/en-ng/billing/kb/transactions/creditcard.html)
*   [How will I update my customer’s card if it gets expired?](/en-ng/billing/kb/transactions/customer-update.html)
*   [How to record payment for offline subscriptions?](/en-ng/billing/kb/transactions/offline.html)
*   [How to enable excess payments to apply automatically?](/en-ng/billing/kb/transactions/excess-payments.html)
*   [How do I make a refund?](/en-ng/billing/kb/transactions/refund-make.html)
*   [What is the difference between credit notes and excess payments?](/en-ng/billing/kb/transactions/excess-credits.html)
*   [Can I import and export credit card details?](/en-ng/billing/kb/transactions/import-export.html)