# 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="https://4031188996-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FXMVkjt8zqHBQX1c9QvFS%2Fuploads%2FAXKIaxNWnmC67BBocmay%2FShortcut.png?alt=media&#x26;token=a5afa7b1-6b40-4772-bc6a-fd07689058b3" 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="https://4031188996-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FXMVkjt8zqHBQX1c9QvFS%2Fuploads%2FkvTDzyIOBl96sm7UL7ML%2FDirect.png?alt=media&#x26;token=d4ee5ae5-1760-4c8d-a3df-0e3f79920198" 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="https://4031188996-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FXMVkjt8zqHBQX1c9QvFS%2Fuploads%2F1az5obV2EKQCXfv6evxE%2FManual.png?alt=media&#x26;token=38730129-62cd-4a4c-a467-64d3f12ca484" 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.