# Do Not Allow Rate Below

**YouTube:** [How to Set a Minimum Threshold Rate to Restrict Billing Below It in Sale Bill ?](https://www.youtube.com/watch?v=qajmcPQSNQo)

## How to Set a Minimum Threshold Rate to Restrict Billing Below It in Sale Bill?

In this tutorial, we will explore the **“Do Not Allow Rate Below”** feature in **Logic ERP**, which is designed to maintain pricing consistency and protect profit margins by restricting billing rates below defined thresholds.

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### **Step-by-Step Instructions:**

* Access to the **Sales Voucher Configuration**.
* Select the R**elevant Billing Series**.
* Locate and Enable the Feature labeled: **“Do Not Allow Rate Below”**
  * Choose the desired **rate type** from the dropdown list.
  * For this example, select **MRP**, then save the configuration.

<figure><img src="https://4031188996-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FXMVkjt8zqHBQX1c9QvFS%2Fuploads%2FfB6zfnXIQvZaRK4SxyeO%2FSet%20it%20as%20MRP.png?alt=media&#x26;token=15cad38d-b28b-4b6e-8595-8e27036aebb7" alt=""><figcaption><p>As mentioned above, follow the given steps and select the appropriate option from the dropdown as per your requirement.</p></figcaption></figure>

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### **Demonstrating the Feature:**

* **Scenario Example:**
  * Let’s say the **MRP of an item is ₹1,299**.
  * During billing, if you try to enter a rate **lower than ₹1,299**, such as ₹1,100:
    * The system will **block the transaction**.
    * An **error message** will appear:

      > *"Billing rate cannot be below MRP."*

<figure><img src="https://4031188996-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FXMVkjt8zqHBQX1c9QvFS%2Fuploads%2F2diTS3oCSBfFBIRR6oQo%2FMRP%20Prompt.png?alt=media&#x26;token=27f914fc-2556-4c43-96de-1aeb0241a5ae" alt=""><figcaption><p>As shown in the picture, the software has prompted a "below rate" warning.</p></figcaption></figure>

* **Behavior with Other Rate Types:**
  * The same validation applies if you select other rate types such as:
    * **Purchase Rate** – Prevents billing below the purchase cost.
    * **Basic Rate** or **Sale Rate** – Enforces billing above internal pricing standards.
    * **SP Rate** – Adheres to custom special price rules.

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### **Benefits:**

* Prevents **unintentional losses** due to under-billing.
* Ensures **pricing consistency** across all transactions.
* Maintains **profit margins** and protects business interests.