# Inventory BOM
An Inventory BOM (Bill of Materials) is a simple recipe for the Inventory module. It defines a single output product, the quantity it produces, and the raw materials consumed to make it. Inventory Conversions use it to auto-fill the consumed inputs, scaled to the quantity being produced — so you record the same recipe once and reuse it every time.
Overview & List View
Go to Inventory → Inventory BOM from the left menu. The list shows every Inventory BOM with the product item, output quantity, and unit.
List columns: Id, Name, Item, Unit, Quantity, Status.
Quick filter tabs: Active, Suspended.
Advanced Filters: Name, Item, Item Group, Unit, Raw Material, Branch, Status, Created Date.
List row actions: New, Edit, Delete, View, Suspend, Activate.
> An Inventory BOM is a standalone master, separate from the Production Bill of Materials. It is intentionally lightweight — one product and its raw materials — and is used only by Inventory Conversions.
Quick Start — Create an Inventory BOM
- Go to Inventory → Inventory BOM and click New.
- Enter a Name for the recipe (must be unique).
- Select the Item * the BOM produces, its Variant (if any), the output Quantity *, and the Unit *.
- Under Raw Materials, add each consumed item with its Quantity and Unit. Optionally set a Deviation Limit (%) per line.
- Click Save. The BOM becomes Active and is now available for selection on Inventory Conversions.
Example. A BOM named "1 Gift Box" produces Item = Gift Box, Quantity = 1, and consumes 1 Carton, 2 Chocolate Bars, and 1 Ribbon. When a conversion produces 10 Gift Boxes, the recipe is scaled to 10 Cartons, 20 Chocolate Bars, and 10 Ribbons automatically.
| **Field** | **Description** |
|-----------|-----------------|
| Name * | Unique name for the recipe. |
| Item * | The product this BOM produces. Only one product per BOM. |
| Variant | Item variant, where the item has variants. |
| Quantity * | Output quantity this BOM produces. Used as the base for scaling. |
| Unit * | Unit of measure for the output. Defaults from the item. |
| Branch | Optional branch scope. |
| Notes | Remarks about the BOM. |
Raw Materials
The components consumed to produce the BOM's output quantity.
| **Column** | **Description** |
|------------|-----------------|
| Sl Num | Line serial number. Auto-numbered. |
| Item * | Raw material consumed. |
| Variant | Item variant, where the item has variants. |
| Quantity * | Quantity consumed to make the BOM's output Quantity. |
| Unit * | Unit of measure. Defaults from the item. |
| Deviation Limit (%) | Optional allowed usage variance for the line, for your own reference. |
How Scaling Works
When an Inventory Conversion fetches raw materials from a BOM, each raw-material quantity is scaled by the ratio of the quantity being produced to the BOM's own output quantity:
consumed quantity = raw material quantity × (product quantity ÷ BOM quantity)
So a BOM that consumes 2 kg of a material to produce 1 unit will suggest 22 kg when the conversion produces 11 units. The fetched lines remain fully editable on the conversion afterwards.
Actions & Status
| **Action** | **When** |
|------------|----------|
| Edit | Modify the BOM. |
| Delete | Remove the BOM. |
| Suspend | Deactivate an Active BOM so it can no longer be selected. |
| Activate | Reactivate a Suspended BOM. |
| Clone | Copy to a new BOM. |
| **Status** | **Description** |
|------------|-----------------|
| Active | Available for selection on Inventory Conversions. |
| Suspended | Hidden from selection until reactivated. |
FAQ
How is this different from the Production Bill of Materials?
The Production BOM is a full manufacturing recipe (overheads, by-products, wages, variance limits) used by Production Orders and Vouchers. The Inventory BOM is a lightweight recipe — one product and its raw materials — used only by Inventory Conversions.
Can a BOM have more than one product?
No. An Inventory BOM produces exactly one product. Create a separate BOM for each product.
Does using a BOM move any stock?
No. The BOM only supplies the recipe. Stock moves only when the Inventory Conversion is approved.
Can I edit the fetched raw materials on a conversion?
Yes. The BOM pre-fills the consumed inputs; you can adjust quantities, units, batches, and lines before saving.
What if I change a BOM later?
Existing conversions keep the raw materials that were fetched at the time. New conversions use the updated recipe.