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

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

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

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# Can I enable both Advance Invoice and Advance Payment Requests?

No, you can select only one option, either **Advance Invoice** or **Advance Payment Requests** as _Advance Billing Method_. Once an option is chosen, it cannot be edited. However, you can change the option by disabling _Advance Billing_ and then enabling it again to select the required advance billing method.