# Move PO Number to Lot Number
**YouTube:** [How to Map Purchase Order Number to Lot Number in Purchase Orders?](https://youtu.be/_dJ6Q7yGl58)
## How to Map Purchase Order Number to Lot Number in Purchase Orders?
This tutorial explains how to automatically assign the **Purchase Order (PO) Number as the Lot Number** in Logic ERP. This feature ensures consistency in lot tracking by linking each item’s lot number directly with its PO number.
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### **Objective of This Feature**
* Auto-fill **Lot Number using PO Number**
* Ensure consistency in batch tracking
* Eliminate manual lot number entry
* Improve traceability and accuracy
***
### Access to Purchase Order **Configuration**
* Go to **Purchase Order Module**
* Open **Configuration Window**
* Navigate to **Other Settings**
* Locate and enable the option labeled as:
> **“Move PO Number to Lot Number”**
* Click **OK** to apply changes.
**Functionality**
* PO Number is automatically assigned as **Lot Number**
* Manually entered lot numbers will be **overwritten**
* If left blank, system will **auto-fill** using PO number
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#### Implement in **Purchase Order**
* Start a **New Purchase Order Entry**
* Enter **Supplier Name**
* Note the **PO Number** (e.g., *PO62*)
**Enter Item Details**
* Go to **Item Details Section**
* Enter Item Details
* Manually define any **Lot Number**
* Save the Purchase Order
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### **Verify in Modify Mode**
**System Behavior**
* Open the same PO in **Modify Mode.**
**Result**
* Manually entered Lot Number is **replaced**
* **PO Number (PO56)** is automatically set as Lot Number
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### **Key Benefits**
* Ensures uniform lot numbering
* Simplifies batch tracking
* Reduces manual errors
* Improves traceability of transactions
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### **Best Practice Tips**
* Use this feature when PO-based lot tracking is required
* Avoid manual lot entry as it will be overridden
* Ensure PO numbering format is standardized
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### **Final Outcome**
* Lot Number is automatically assigned from PO Number
* Consistent and accurate batch tracking
* Reduced manual effort
* Improved efficiency and control in Purchase Orders
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