# Gross Amount Qty
**YouTube:** [How to Configure Shortage (%) , Gross Qty , Net Qty , and Impact on Calculations in Sale Bill?](https://www.youtube.com/watch?v=kvdpmx6xK5M)
## How to Configure Shortage (%), Gross Qty, Net Qty and Impact on Calculations in Sale Bill?
This tutorial explains **two key configuration parameters** in the **Sale Voucher Configuration**:
* **Gross Amount Qty**
* **Gross Quantity Change**
These settings control how amounts are calculated based on **net or gross quantity** and how **shortages** affect quantity fields during sales billing.
***
### Access Sale Voucher Configuration
* Navigate to **Sale Voucher Configuration**.
* Select the relevant **Billing Series**.
* Under the Other Settings - 2.
* Locate the option labeled as:
> **"Gross Amount Qty"**\
> This option offers two modes:
* **Net Quantity**
* **Gross Quantity**
* Below it, configure the related setting under the Other Settings - 3.
> **"Gross Quantity Change"**\
> Available options:
* Update Net Quantity
* Update Shortage Percent Only
* Quantity as Gross Quantity
***
> ### **"Let's understand both options of Gross Amount Qty one by one."**
### Option 1 - Gross Amount Qty = **Net Quantity**
> In this mode, the **gross amount** is calculated based on the **net quantity** (after applying any shortage).
#### Configuration:
* **Gross Amount Qty** = Net Quantity
* **Gross Quantity Change Options**: Let’s explore all three one by one.
***
#### **Gross Quantity Change = Update Net Quantity**
* **Scenario:** You enter **100 units** and apply a **10% shortage**.
* **System Behavior:**
* **Net Quantity** updates to **90**
* **Gross Quantity** remains at **100**
* **Gross Amount** is calculated based on **Net Quantity (90)**
***
#### **Gross Quantity Change = Update Shortage Percent Only**
* **You apply 10% shortage**
* **System Behavior:**
* **Shortage Percent** updates
* **Gross Quantity** adjusts accordingly
* **Net Quantity** remains unchanged
* **Gross Amount** still based on **Net Quantity**
***
#### **Gross Quantity Change = Quantity as Gross Quantity**
* **Apply 10% shortage**
* **System Behavior:**
* **Gross Quantity** updates to **90**
* **Net Quantity** remains unchanged
* **Gross Amount** is still calculated using **Net Quantity**
***
### Option 2 - Gross Amount Qty = **Gross Quantity**
> In this mode, the **gross amount** is calculated using the **gross quantity**.
#### Configuration:
* **Gross Amount Qty** = Gross Quantity
Let’s now explore how each "Gross Quantity Change" parameter behaves.
***
#### **Gross Quantity Change = Update Net Quantity**
* **Apply 10% shortage on 100 units**
* **System Behavior:**
* **Net Quantity** updates to **90**
* **Gross Quantity** remains at **100**
* **Gross Amount** is calculated using **Gross Quantity (100)**
***
#### **Gross Quantity Change = Update Shortage Percent Only**
* **Apply 10% shortage**
* **System Behavior:**
* **Shortage Percent** is updated
* **Gross Quantity** adjusts (e.g., from 100 to 90)
* **Net Quantity** remains unchanged
* **Gross Amount** is calculated using **Gross Quantity**
***
#### **Gross Quantity Change = Quantity as Gross Quantity**
* **Apply 10% shortage**
* **System Behavior:**
* **Gross Quantity** updates to **90**
* **Net Quantity** remains unchanged
* **Gross Amount** is calculated using **updated Gross Quantity (90)**
***
### Summary Table
| **Config** | **Shortage Applied** | **Gross Qty** | **Net Qty** | **Amount Based On** |
| -------------------------------------------------------------------- | -------------------- | ------------- | ----------- | ------------------- |
|
Gross Amt Qty = Net Qty GQ Change = Update Net Qty
| 10% | 100 | 90 | Net Qty (90) |
|
Gross Amt Qty = Net Qty GQ Change = Update Shortage Only
| 10% | 90 | 100 | Net Qty (100) |
|
Gross Amt Qty = Net Qty GQ Change = Qty as Gross Qty
| 10% | 90 | 100 | Net Qty (100) |
|
Gross Amt Qty = Gross Qty GQ Change = Update Net Qty
| 10% | 100 | 90 | Gross Qty (100) |
|
Gross Amt Qty = Gross Qty GQ Change = Update Shortage Only
| 10% | 90 | 100 | Gross Qty (90) |
|
Gross Amt Qty = Gross Qty GQ Change = Qty as Gross Qty
| 10% | 90 | 100 | Gross Qty (90) |
***
### Final Notes
* **Net Quantity**: Used for actual stock movement.
* **Gross Quantity**: Used for billing and calculation when shortages are involved.
* Selecting the correct configuration depends on your **business logic**, **shortage handling**, and **billing policy**.
