# Do not update rates if the exchange rate is changed.
**YouTube:** [How to Prevent Rate Updates When Exchange Rate Changes in Purchase Orders?](https://youtu.be/oleaO2JaNC8)
## How to Prevent Rate Updates When Exchange Rate Changes in Purchase Orders?
This tutorial explains how to prevent automatic updates of **Item Rates** when the **Exchange Rate** is changed in a Purchase Order in Logic ERP. This feature ensures that once rates are entered, they remain fixed—even if the exchange rate is modified later.
***
### **Objective of This Feature**
* Prevent automatic recalculation of item rates
* Maintain consistency in entered rates
* Avoid unintended price changes
* Improve control over Purchase Order transactions
***
### **Understand Default Behavior**
**Initial Process**
* Create a **New Purchase Order**
* Select **Supplier**
* Choose **Currency / Exchange Rate**
**Observation**
* Go to **Item Details Section**
* Enter an item
**System Behavior**
* Item Rate is calculated based on the **selected exchange rate**
***
### **Change Exchange Rate**
**Action**
* Return to **Header Section**
* Modify the **Exchange Rate**
**Default Result**
* Item Rates in the grid are **automatically updated**
* Rates change according to the new exchange rate
***
### **Enable Rate Lock Feature**
* Open **Configuration Window**
* Go to **Other Settings**
* Locate and enable the option labeled as:
> **“Do not update rates if the exchange rate is changed”**
* Click **OK** to apply changes.
***
#### Implement **Functionality**
**New Transaction**
* Start a **New Purchase Order Entry**
* Select **Supplier**
* Choose **Currency / Exchange Rate**
**Implement Process**
* Enter item in **Item Details Section**
* Change the **Exchange Rate** again
**System Behavior**
* Item Rates **remain unchanged**
* No automatic recalculation occurs
***
### **Key Benefits**
* Protects manually entered rates
* Prevents pricing inconsistencies
* Improves control over purchase transactions
* Reduces chances of calculation errors
***
### **Best Practice Tips**
* Enable this feature when working with **fixed negotiated rates**
* Double-check exchange rates before item entry
* Use carefully in dynamic pricing scenarios
***
### **Final Outcome**
* Item rates stay fixed even after exchange rate changes
* Greater control over pricing in Purchase Orders
* Reduced risk of unintended rate modifications
* Improved accuracy and reliability in transactions
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