# Prompt for Lot Number before saving (Purchase/Challan)

YouTube: [How to Enable Lot /Batch No. popup before saving in Purchase?](https://www.youtube.com/watch?v=Ifn5PJclfeA)

## How to Enable Lot /Batch No. popup before saving in Purchase?

In this tutorial, we will guide you through the steps to configure a **prompt** for entering a **default LOT number** before saving a **purchase voucher or challan**. This ensures accuracy in inventory management and prevents missing LOT details.

### Steps to Configure Default Lot Number Prompt

* Navigate to the "Purchase Voucher Configuration".
* Locate the option "Prompt for Lot Number before saving (Purchase/Challan)".
* Tick the checkbox to activate this validation.

<figure><img src="https://4031188996-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FXMVkjt8zqHBQX1c9QvFS%2Fuploads%2FGmy5UvRq4eGkgue0y0Ft%2FPrompt%20for%20Lot%20Number%20before%20saving%20PurchaseChallan-Configuration.png?alt=media&#x26;token=7e70a953-170e-4cd9-8fb2-cf818ef109e6" alt=""><figcaption><p>Let's keep this feature enabled to observe its Impact.</p></figcaption></figure>

### **Observe Impact on Purchase:**

* Create a New "Purchase Voucher".
* As soon as you define the **item** and its **details** and proceed to save, the software will pop up a window prompting you to enter the **default LOT number**.

<figure><img src="https://4031188996-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FXMVkjt8zqHBQX1c9QvFS%2Fuploads%2Fi3BlUDN80Alaj81KkfwP%2FPrompt%20for%20Lot%20number%20manul.png?alt=media&#x26;token=6f286dac-c5e4-488b-b614-3d405ac79e44" alt=""><figcaption><p>This picture illustrates that you need to <strong>enter the LOT number</strong> here.</p></figcaption></figure>

### Benefits

* **Organized Records:** All item stocks in a purchase will be recorded under the same lot number.
* **Error Reduction:** Confirms lot number before saving to prevent mistakes.