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===== 🏗️ Bill of Materials (BOM) =====

A **Bill of Materials (BOM)** is a list of components and raw materials needed to produce a finished product.

The BOM feature in **CushionsERP** is built on top of [[https://www.dolibarr.org/|Dolibarr ERP/CRM]], offering flexible structure and multi-level BOM support for manufacturing workflows.

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**🔍 What is a BOM?**

A BOM defines:

  * The **components** (materials, semi-finished goods) required
  * The **quantity** of each component
  * The **finished product** being built

It’s used during **Manufacturing Orders (MO)** to consume raw materials and generate finished stock.

> 🛠️ A product can have **one or more BOMs**, which lets you define variants or alternate production methods.

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**🛒 BOM Components**

Each BOM line includes:

  * 🆔 **Component** – A registered product or material
  * 🔢 **Quantity** – Amount needed per unit of finished good
  * 📉 **Loss (%)** – Optional wastage or production loss
  * 🏷️ **Notes** – Optional remarks per line item

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**📐 Simple vs Nested BOMs**

  * **Simple BOM** — A flat list of components used to make a product
  * **Multi-level BOM** — A BOM where some components are themselves finished goods with their own BOM

> 📦 Example: "Madrid Sofa" may include *Mattress Cushion*, which itself has a BOM of foam + fabric + label.

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**⚙️ How to Create a BOM**

1. Go to **Products & Services**
2. Select a **Finished Product** you want to assemble
3. Click on the **BOM tab**
4. Click **Create a New BOM**
5. Add components and their quantities
6. Save the BOM

> 💡 Make sure all components are already registered as products/components in the system.

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**🔁 BOM in Manufacturing**

When you generate a **Manufacturing Order**, Cushions will:

  * Automatically fetch the **BOM** linked to the product
  * Reserve or consume component stock
  * Produce finished goods into inventory

You can choose to:

  * **Manually validate** and adjust component usage
  * Use **Workstation modules** (if enabled in Dolibarr) for time tracking and efficiency

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**📎 Key Considerations**

  * A product can only have **one active default BOM**
  * Components should have **Stock Management** enabled
  * BOMs can be duplicated or revised for version control
  * BOM cost estimation is based on component cost + loss %

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**🧠 Best Practices**

  * Always check component availability before production
  * Document **loss factors** clearly in the BOM
  * Group BOMs by category or production type
  * Review cost breakdown to analyze profitability

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**📘 Case BOM Study: Madrid Sofa**

The "Madrid Sofa" is a finished good composed of multiple subcomponents, each with their own BOM:

* 🛋️ **Madrid Sofa** (Finished Product)
  * 🧩 Mattress Cushions — **BOM: Foam + Fabric + Zipper**
  * 🧩 Back Cushions — **BOM: Hollow Fibre + Fabric**
  * 🧩 Pillows — **BOM: Hollow Fibre + Fabric**
  * 🧩 Raincover — **BOM: PVC Sheet + Label**

Each of these subcomponents must be defined as **products with their own BOMs**, so that when manufacturing a Madrid Sofa, all child items and raw materials are automatically accounted for.

> 🔄 This structure enables multi-level manufacturing with detailed cost and material control.

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**📎 Related Topics**

  * [[product:registering_product|Registering Products]]
  * [[manufacturing:manufacturing|Manufacturing]]
  * [[product:product_lot_number_guidance|Product Lot Number Guidance]]
  * [[product:case_bom_madrid_sofa|Case BOM Study: Madrid Sofa]]