> 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-learning-hub-tutorials-and-best-practices/user-access/logic-global-admin/sale/sale-settings-3/prompt-in-billing-if-lot-expiry-is-below.md).

# Prompt in Billing if Lot Expiry is below

**YouTube:** [How to Restrict Sale of Lots / Batches Expiring Within a Specified Number of Days ?](https://www.youtube.com/watch?v=4azqApFTl0A)

## How to Restrict Sale of Lots / Batches Expiring Within a Specified Number of Days?

This tutorial explains how to configure a setting that prompts a warning message if an item's lot expiry falls within a specified number of days during billing.

***

### Steps to Enable Prompt in Billing:

* Navigate to the **Logic** folder on your system.
* Run **Logic Admin** to access settings.
* In the Logic Admin interface, open **Global Settings**.
* Go to the **Sales Settings 3** tab under the Sale.
* Locate and enable the option: **"Prompt in Billing if Lot Expiry is below"**
* Enter the desired number of days as the expiry threshold (e.g., 90 days).

<figure><img src="/files/xccq2QJ6pX7XLisLODcN" alt=""><figcaption><p>Let's keep this feature enable to observe its impact in Billing.</p></figcaption></figure>

* Click **Save** to apply the changes.
* After saving the settings, **restart the application** to activate the new configuration.

***

### **Implement the Functionality:**

* Open the "Billing" module and create a **New Sale Bill**.
* Add an item with an expiry date **within the defined threshold**.
* The software will:
  * Prevent the bill from being saved.
  * Display a **prompt or error message** warning about the lot's expiry.

<figure><img src="/files/9B3rRGMMyaUxviIDJvmM" alt=""><figcaption><p>A prompt or error message is displayed, warning that the item's lot expiry date falls within the defined threshold.</p></figcaption></figure>

***

This setting helps ensure that items nearing expiry are flagged before billing, reducing the risk of selling expired or soon-to-expire stock.


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