# 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="https://4031188996-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FXMVkjt8zqHBQX1c9QvFS%2Fuploads%2FonhDW6C83t9uRFjHXKGF%2FDo%20Not%20Allow%20Entry%20WO%20Purchase%20OrderChallan%20Configuration.png?alt=media&#x26;token=5da3247a-ea04-41ca-8e37-ed3996efeef1" 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="https://4031188996-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FXMVkjt8zqHBQX1c9QvFS%2Fuploads%2FE06fuDkMEpzpSGo4rpYK%2FPrompt%20for%20Entry.png?alt=media&#x26;token=e5d8c835-1110-4c34-ad42-d6076aa752ff" 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.