> For the complete documentation index, see [llms.txt](https://manual.unosofbooks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://manual.unosofbooks.com/customers/customer-service.md).

# Customer Service

- [Email Multiple Invoices](https://manual.unosofbooks.com/customers/customer-service/email-multiple-invoices.md): In this module, its possible to mass-sent customer invoices to clients.
- [Search Invoices](https://manual.unosofbooks.com/customers/customer-service/search-invoices.md): In this module find easily any Purchase Order that is invoiced in your UNOSOF application.
- [Rollback Customer Invoice](https://manual.unosofbooks.com/customers/customer-service/rollback-customer-invoice.md): This modules eliminates a PO's invoice with the purpose of correcting or eliminating an issue of any matter.
- [Send Statements](https://manual.unosofbooks.com/customers/customer-service/send-statements.md): This module manages the mass emailing of Account Statements to the Customer. An Account Statement is the summary of all invoices and financial transactions within a period of time.
- [Manage Invoice Footers](https://manual.unosofbooks.com/customers/customer-service/manage-invoice-footers.md): This section helps to personalize footers for some doucments with additional information.
- [Customer Credits](https://manual.unosofbooks.com/customers/customer-service/credit-notes.md): Here we explain how to apply a credit note in your UNOSOF application.


---

# 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://manual.unosofbooks.com/customers/customer-service.md?ask=<question>&goal=<endgoal>
```

`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.