## Zoho Billing - Product, solutions, integrations, support, and resources Index Access the complete documentation index at: https://www.zoho.com/ae/billing/llms.txt Use this file to discover all available documentation pages before proceeding. # Subscription Items * [Is there any limit to the number of plans, add-ons or coupons that I can create?](/ae/billing/kb/subscription-items/plan-addon-coupon-limits.html) * [What happens when a plan, add-on, or coupon has been made inactive?](/ae/billing/kb/subscription-items/plan-addon-coupon-inactive.html) * [Can I configure a different subscription number series for different subscription items?](/ae/billing/kb/subscription-items/subscription-item-numbers.html) * [Is it possible for my customers to edit the quantity of plans and add-ons on the hosted pages?](/ae/billing/kb/subscription-items/edit-quantity.html) * [What is the purpose of adding a Redirect URL to a subscription item?](/ae/billing/kb/subscription-items/redirect-url.html) * [Can I associate different email templates for different subscription items?](/ae/billing/kb/subscription-items/subscription-item-template.html) * [How to create a free plan in Zoho Billing?](/billing/kb/subscription-items/free-plan.html) * [What are the different pricing schemes for the addons?](/ae/billing/kb/subscription-items/pricing_schemes.html) * [Does an addon have a validity period?](/ae/billing/kb/subscription-items/addon-validity.html) * [Can I use only an addon for my customers without a plan?](/ae/billing/kb/subscription-items/customer_addon.html) * [Can an addon be added to a subscription during the trial period?](/ae/billing/kb/subscription-items/trial.html) * [Can I have a 0$ plan?](/ae/billing/kb/subscription-items/plan.html) * [Why do you list only the income accounts under sales option while creating a plan and an addon?](/ae/billing/kb/subscription-items/income_accounts.html) * [Will my customer be able to view subscription item’s description?](/ae/billing/kb/subscription-items/subscription-item-description.html) * [How are coupons in Zoho Billing differentiated?](/ae/billing/kb/subscription-items/coupons.html) * [How can I delete or mark a subscription item inactive?](/ae/billing/kb/subscription-items/delete-inactive.html)