# Do not allow Discount Coupons in case of discounted bill
**YouTube:** [How to Prevent Use of Discount Coupons on Discounted Bills?](https://www.youtube.com/watch?v=JCPbcSsJ4B8)
## How to Prevent Use of Discount Coupons on Discounted Bills?
In this tutorial, we will explore a **Logic ERP feature** that prevents the use of **discount coupons** if any other **discounts or schemes** have already been applied to a bill.
***
### Access Global Settings in Logic Admin
* Open **Logic Admin**.
* Navigate to **Global Settings**.
* Under **POS Options**, go to the **POS Options 1** section.
* Locate and enable the option labeled as:
> **"Do not allow Discount Coupons in case of discounted bill"**
* Click **Save and** **restart the software** to apply the changes.
***
### Implement **the Functionality**
* Open the **Sale Bill – Touch Screen** window.
* Add an item to the bill.
* Apply a **Trade Discount** (e.g., 5%) while entering item details.
* Now try to **apply a discount coupon** to the same bill.
***
### **System Response**
When you attempt to save the voucher:
* The system will **restrict the entry**.
* An **error message** will appear stating:
> “Discount coupons are not allowed in case of other discounts or schemes.”
***
### **Use Case & Benefit**
This setting helps:
* Maintain **billing discipline** by avoiding overlapping discounts.
* Ensure that **discount rules** are enforced consistently.
* Prevent revenue loss from **stacked discount misuse**.
---
# Agent Instructions: Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://kb.logicerp.com/logic-erp-learning-hub-tutorials-and-best-practices/user-access/logic-global-admin/pos-options/pos-options-1/do-not-allow-discount-coupons-in-case-of-discounted-bill.md?ask=
```
The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.