> For the complete documentation index, see [llms.txt](https://kb.logicerp.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://kb.logicerp.com/logic-erp-installation-configuration-and-troubleshooting-solutions/faqs/sales/enable-the-modify-button-in-sale-bill.md).

# Enable the Modify Button in Sale Bill

**YouTube:** [How to Enable the Modify Button in Sale Bill?](https://www.youtube.com/watch?v=SdRfdYWQj8g)

## How to Enable the Modify Button in Sale Bill?

In this tutorial, we’ll guide you through the process of **modifying a sale bill** in Logic ERP.

***

### Enable the Modify Option

In the billing window, the **Modify button** is usually hidden for security reasons.\
To enable it:

* Turn **Num Lock OFF** on your keyboard.
* Press **Alt + Insert**.
* The **Modify button** will now be visible.

<figure><img src="/files/m1uRkBcMCULn44hYg03X" alt=""><figcaption></figcaption></figure>

***

### You have two ways to open a bill:

* **Direct Entry** → Click **Modify**, then enter the bill number you want to edit.

<figure><img src="/files/EZtisdmAW6yHUPrUQOLM" alt=""><figcaption></figcaption></figure>

* **Search Option** → Right-click on **Modify**, open the search window, select the bill you want to update, and proceed.

<figure><img src="/files/acM26ykptQM9Kc6ztlUx" alt=""><figcaption></figcaption></figure>

***

### Make Changes

* Update the required fields (for example, modify the **quantity**).
* Save the bill.

The sale bill has now been successfully modified.


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