# Do Not Allow Entry W/O Purchase Order/Challan

**YouTube Link:** [How to make Purchase entry mandatory through Order or Challan only in Logic ERP Software?](https://www.youtube.com/watch?v=zkZlL3_KAHc)

## How to make Purchase entry mandatory through Order or Challan only in Logic ERP Software?

In this tutorial, we'll explore a feature that restricts purchase entries in the ERP system without a purchase order or challan. This improves security and control over procurement processes. 

### Setup-by-Step Guide

* Navigate to the "Purchase Voucher Configuration".
* Select the option "Do Not Allow Entry W/O Purchase Order/Challan".
* Tick the checkbox to activate this validation.

<figure><img src="/files/Is6ocXY0CpKtWUqJiE1Y" alt=""><figcaption><p>Let's Keep this feature enable to observe it's Impact.</p></figcaption></figure>

### **Observe Effect on Purchase :**

* Create a "Purchase Bill".
* As soon as you enter the item and move to the next line in the grid, the software will prompt, "No Entry Allowed Without Purchase Order/Challan."

<figure><img src="/files/MUC3dhc8MoovrwU81vei" alt=""><figcaption><p>Prompt for "No Entry Allowed Without Purchase Order/Challan."</p></figcaption></figure>

By Implementing these measures, you can effectively restrict manual purchase entries within the ERP system, thereby enhancing security and ensuring greater control over your procurement processes.


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