> For the complete documentation index, see [llms.txt](https://kb.logicerp.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://kb.logicerp.com/logic-erp-installation-configuration-and-troubleshooting-solutions/faqs/scheme/implement-lot-or-purchase-date-wise-scheme-in-sale-bill.md).
# Implement Lot or Purchase Date wise Scheme in Sale Bill
**YouTube:** [How to set up Lot/Batch or Purchase Date–based scheme in Sale Bill?](https://youtu.be/EnoDHDEbhKA)
## How to Configure Lot or Purchase Date wise Scheme in Logic ERP?
This tutorial explains how to configure a **Lot or Purchase Date–Wise Scheme** in Logic ERP and apply it during sale billing.
***
### **Access to Scheme Campaign**
* Navigate to **Configuration** and open **Setup Scheme Campaign**.
* Click **Refresh**, then enter the **Scheme Campaign Name**.
* Define the **Active Period** of the scheme.
* Click **Save**.
***
### **Set Group Options**
* Open the **Group Options** tab.
* Select the **Scheme Campaign** created.
* Enter the **Group Name** in the *Scheme Group Type* column.
* Press **Space** and choose the **Scheme Type**.
* In the **Filter Type** column, select **Lot Purchase Date**.
* Define the **Filter Start Date** and **Filter End Date**.
* Click **Save**.
**Purpose:**\
Only items belonging to the selected brand and whose **lot purchase date** falls within the defined date range will qualify for the scheme.
***
### **Select Applicable Company/Brand**
* Open the **Scheme Group** tab.
* Choose the **Company / Brand** to which the scheme will be applied.
* Click **Save**.
***
### **Configure Scheme Slab**
* Navigate to **Scheme Campaign Slab Details**.
* Select the relevant **Scheme Campaign**.
* Enter **1** in the *Minimum Quantity* field.
* Set **Scheme Basis = Quantity**.
* In the *Slab Value* column, enter **1**.
* Define **CD Discount = 25%**.
* Click **Save**.
***
### **Implement Scheme in Sale Bill**
* Create a **New Sale Bill**.
* Add items that:
* Belong to the **selected brand**, and
* Have **lot purchase dates within the defined filter range**.
* Add one more item with a **lot purchase date outside** the defined range.
* Save the voucher and **tick to enable the scheme**.
**Result:**
* Only eligible items (based on lot purchase date) will show the scheme applied.
* Items outside the date range remain **excluded**.
***
### **Conclusion**
By following these steps, you can easily configure and apply a **Lot or Purchase Date–Wise Scheme** in Logic ERP. This setup ensures that discounts are applied accurately based on the purchase dates of individual lots, improving scheme control and maintaining billing accuracy.
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