> For the complete documentation index, see [llms.txt](https://academy.pakk.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://academy.pakk.io/school-of-erp/invoicing-and-payments/handling-credit-notes.md).
# Handling Credit Notes
A credit note is issued when a customer returns goods or if an error is made on the original invoice. ERP systems allow businesses to create credit notes that offset the original invoice, helping to manage returns and refunds efficiently.
**When to Issue a Credit Note:**
* When goods are returned by the customer.
* When an invoicing error (such as overcharging) occurs.
* To adjust or cancel an invoice after dispatch.
Using credits in Pakk
---
# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.
## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:
```
GET https://academy.pakk.io/school-of-erp/invoicing-and-payments/handling-credit-notes.md?ask=&goal=
```
`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.