> 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-learning-hub-tutorials-and-best-practices/production/production-vouchers/job-order/job-order-configuration/default-cf.md).
# Default CF
**YouTube:** [How to Set the Default Quantity Conversion Factor (CF) in Job Orders?](https://youtu.be/NrU629-qiwA)
## How to Set the Default Quantity Conversion Factor (CF) in Job Orders?
In this tutorial, we will learn how to define the **Default Conversion Factor (CF)** for quantity in a Job Order. This feature allows you to specify which Item Conversion Factor should be used by default for quantity calculations during Job Order entry.
***
### Objective of This Feature
* Define a default Conversion Factor (CF) for quantity calculation.
* Automatically calculate quantities based on pack conversion.
* Support multiple packing units for the same item.
* Improve accuracy in quantity calculations.
* Provide flexibility to change the conversion factor during entry.
***
### Access to the Job Order Configuration
* Open the **Job Order Configuration** window.
* Navigate to the **Other Settings** section.
* Locate the option labeled as:
> **"Default CF"**
This dropdown displays all the conversion factors defined for the Item.
By default, the option is set to **Units**.
***
### Default Behavior (Units)
* Leave **Default CF** set to **Units**.
* Initiate a **New Job Order**.
* Select the Worker.
* Proceed to the **Item Details** section.
* Transact an Item.
**Result**
* The **Units Per Pack** field displays **1**.
* The total quantity is calculated in **single units**.
* No pack conversion factor is applied.
***
### Configure Default CF as Item CF1
**Configuration**
* Return to the **Job Order Configuration** window.
* Change **Default CF** to **Item CF1**.
* Save the configuration.
**Observe the Functionality**
* Initiate a **New Job Order**.
* Select the Worker.
* Transact the same Item.
**Result**
The **Units Per Pack** field automatically displays the value defined under **Item CF1** in the Item Master.
#### Quantity Calculation
* Enter **1** in the **Packs** column.
* The system automatically calculates the **Total Quantity** according to the selected **Item CF1** conversion factor.
#### Change the Conversion Factor During Entry
The conversion factor can also be changed while creating the Job Order.
* Place the cursor in the **Packs** column.
* Press the **F5** key.
**Result**
A list of all available Item Conversion Factors appears.
Select the required Conversion Factor, and the system immediately recalculates the quantity based on the selected conversion factor.
***
### Key Benefits
* Automatically applies the default conversion factor.
* Simplifies pack-based quantity calculations.
* Supports multiple packing configurations.
* Reduces manual calculation errors.
* Allows flexible conversion factor selection during voucher entry.
***
### Best Practice Tips
* Define all required conversion factors in the **Item Master** before configuring the default CF.
* Select the conversion factor that matches your production or packaging requirements.
* Use **Units** when pack-based calculations are not required.
* Use the **F5** shortcut during entry to quickly switch between available conversion factors whenever needed.
***
### Final Outcome
The **Default CF** feature in Job Order Configuration allows Logic ERP to automatically apply the selected Item Conversion Factor for quantity calculations. Users can also change the conversion factor during voucher entry using the **F5** shortcut, ensuring flexible, accurate, and efficient quantity management based on different packing requirements.
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