# Credit Memos

Credit memos reduce invoice and account balances. By applying one or more credit memos to invoices with positive balances, you can reduce the invoice balances in the same way as applying a payment to an invoice. For more information about credit memos, see [Credit and debit memos](https://knowledgecenter.zuora.com/Billing/Billing_and_Payments/Invoice_Settlement/B_Credit_and_Debit_Memos).

## Retrieve a credit memo

 - [GET /credit_memos/{credit_memo_id}](https://developer.zuora.com/other-api/quickstart-api/credit-memos/getcreditmemo.md): Retrieves the credit memo with the given ID.

## Update a credit memo

 - [PATCH /credit_memos/{credit_memo_id}](https://developer.zuora.com/other-api/quickstart-api/credit-memos/patchcreditmemo.md): Updates a credit memo by setting the values of the specified fields. Any fields not provided in the request remain unchanged.

## Delete a credit memo

 - [DELETE /credit_memos/{credit_memo_id}](https://developer.zuora.com/other-api/quickstart-api/credit-memos/deletecreditmemo.md): Permanently deletes a credit memo. This operation cannot be undone once it is performed.

## List credit memos

 - [GET /credit_memos](https://developer.zuora.com/other-api/quickstart-api/credit-memos/getcreditmemos.md): Returns a dictionary with a data property that contains an array of credit memos, starting after cursor. Each entry in the array is a separate credit memo object. If no more credit memos are available, the resulting array will be empty. This request should never return an error.

## Create a credit memo

 - [POST /credit_memos](https://developer.zuora.com/other-api/quickstart-api/credit-memos/createcreditmemo.md): Creates a new credit memo.

## List credit memo items

 - [GET /credit_memo_items](https://developer.zuora.com/other-api/quickstart-api/credit-memos/getcreditmemoitems.md): Retrieves information about all items of credit memos. A credit memo item is a single line item in a credit memo.

## Apply a credit memo

 - [POST /credit_memos/{credit_memo_id}/apply](https://developer.zuora.com/other-api/quickstart-api/credit-memos/applycreditmemo.md): Apply a credit memo to one or more other billing documents.

## Unapply a credit memo

 - [POST /credit_memos/{credit_memo_id}/unapply](https://developer.zuora.com/other-api/quickstart-api/credit-memos/unapplycreditmemo.md): Unapply an applied credit memo.

## Unpost a credit memo

 - [POST /credit_memos/{credit_memo_id}/unpost](https://developer.zuora.com/other-api/quickstart-api/credit-memos/unpostcreditmemo.md): Unposts an open credit memo that has not been applied, and changes its state to draft.

## Post a credit memo

 - [POST /credit_memos/{credit_memo_id}/post](https://developer.zuora.com/other-api/quickstart-api/credit-memos/postcreditmemo.md): Opens a draft credit memo.

## Cancel a credit memo

 - [POST /credit_memos/{credit_memo_id}/cancel](https://developer.zuora.com/other-api/quickstart-api/credit-memos/cancelcreditmemo.md): Cancels a credit memo. Only credit memos with the Draft status can be cancelled.