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# Cheque Details entry mandatory
**YouTube:** [How to Make Cheque Details Entry Mandatory in the Sale Bill ?](https://www.youtube.com/watch?v=3edNLLPj93I)
## How to Make Cheque Details Entry Mandatory in the Sale Bill ?
In this tutorial, we will demonstrate how to make check details entry mandatory during billing, ensuring accuracy and compliance in transactions.
### **Access Sales Voucher Configuration**
* Navigate to **Sales Voucher Configuration**.
* Select the relevant **Billing Series**.
* Locate the option **Check Details Entry Mandatory**.
Let's keep this feature disable to observe its impact.
### **Testing with the Feature Disabled**
* Keep the feature **disabled** and proceed with billing.
* Select **Check** as the payment mode.
* Attempt to generate the bill **without entering check details**.
* Observe that the bill is saved without requiring check details.
### **Enabling the Feature**
* Go back to **Sales Voucher Configuration** and **enable** the feature.
* Save the configuration and proceed with billing again.
### **Testing with the Feature Enabled**
* Select **Check** as the payment mode.
* Try saving the bill **without check details**.
* The software displays an error message: **"Invalid Check Number. Please enter check details."**
As you can see, the software has prompted a message requiring you to enter the check details.
* Enter the required check details in the header.
* Now, save the bill successfully.
By enabling this feature, you ensure that all transactions involving check payments include complete details, reducing errors and enhancing financial accuracy.
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