## 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. # Credit Notes * [When do I need to use a credit note?](/om/billing/kb/credit-notes/use-credit-note.html) * [How do I delete a credit note that has already been closed?](/om/billing/kb/credit-notes/delete-credit-note.html) * [How do I issue a refund for returned goods?](/om/billing/kb/credit-notes/refund-invoice-amount.html) * [How do refunds work in Zoho Billing?](/om/billing/kb/credit-notes/how-refunds-work.html) * [Is it mandatory to enter an Item when I create a credit note?](/om/billing/kb/credit-notes/enter-item.html) * [Is it possible to apply the unused credits of one customer to an invoice associated with a different customer?](/om/billing/kb/credit-notes/transfer-credits-bwn-customers.html) * [How do I remove a credit note that is already applied to an invoice?](/om/billing/kb/credit-notes/remove-credit-note.html) * [How do I undo the refund created for a Credit Note?](/om/billing/kb/credit-notes/undo-refund-cn.html) * [How do I change the status of a credit note to Closed?](/om/billing/kb/credit-notes/change-status-closed-cn.html) * [How do I generate a report to view the credits applied and the remaining credits of my customers?](/om/billing/kb/credit-notes/generate-report-cn.html)