# Automatic Invoice Numbering

### Automatic Invoice Numbering

By default, the Secure Payment application's payment module automatically assigns an invoice number for each transaction processed. You cannot process a transaction without an invoice number, which then appears on the transaction receipt. You can choose to disable automatic invoice numbering but the terminal will prompt the operator to input an invoice number manually (with a maximum of 12 numeric characters).

#### **To enable or disable the automatic invoice numbering:**

1. From the main screen, touch **Settings**.

\
![Settings button](https://documentation.payfacto.com/SecurePayment/Pay/UG/CA-EN/assets/images/Pay/MainSaleScreen_SettingsButton.png)

2. Enter the merchant password and touch **Confirm**.
3. Scroll to the **Configure application** section.
4. Touch **Terminal options**.
5. Scroll to the **General** section.
6. Enable the use of automatic numbering by toggling the **Automatic invoice number** switch to the right.
7. Disable the use of automatic numbering the **Automatic invoice number** switch to the left.
8. If you have more than one terminal, repeat steps **1** to **7** for each additional terminal where you want automatic or manual invoice numbering.


---

# Agent Instructions: 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:

```
GET https://docs.payfacto.com/payfacto-knowledge/canada-doc-center/applications/secure-payment/payment-standalone-mode/terminal-configuration/automatic-invoice-numbering.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
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.