# Default Challan Series
**YouTube:** [How to Apply Series Based Filter for Sale Challan Retrieval in Sale Bill?](https://www.youtube.com/watch?v=_lv46K8-oks)
## How to Apply Series Based Filter for Sale Challan Retrieval in Sale Bill?
In this tutorial, you’ll learn how to configure a **default Challan series** in Logic ERP, which helps streamline the billing process by automatically filtering and displaying only the relevant Challans during sales voucher creation.
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### **Access Sales Voucher Configuration**
* Open the **Sales Voucher Configuration** module.
* Select the relevant **Billing Series** for which you want to set the default Challan series.
* Navigate to the **"Other Settings – 1"** section.
* Click on the **“Other Settings”** button.
* Move to the **“Defaults – 2”** tab.
* Locate the option labeled: **"Default Challan Series"**.
* Click the field to open a list of all **configured Challan Series** in the system.
* Select the Challan series you want to set as **default**.
* Click **Save** to apply the changes.
> This setting ensures that during billing, only Challans from the selected default series are displayed, simplifying the selection process for users.
***
### **Implement Without Default Challan Series**
* Go to the **Billing screen** and attempt to generate a bill using the **Sales Challan** option.
* Click to **retrieve pending Challans**.
> You’ll observe that the system displays **pending Challans from multiple series**, since no default was previously set. This can potentially cause confusion or result in incorrect selections.
***
### **Implement With Default Challan Series**
* Return to the **Sales Voucher Configuration**.
* Set the desired **Default Challan Series** as described earlier.
* Now, go back to the **Billing screen** and again try to **retrieve a Sales Challan**.
> This time, the system displays **only the pending Challans associated with the selected default Challan series**, ensuring a more focused and error-free billing experience.
***
### **Conclusion:**
Setting a **Default Challan Series** helps streamline operations by filtering out irrelevant Challans during billing. It reduces manual filtering, minimizes errors, and improves the efficiency of the billing process in Logic ERP.
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