What Is Configurable BOM?
Also known as: variant BOM, option-based BOM, modular BOM, product configurator BOM
Definition
A configurable BOM is a bill of materials generated or adjusted from the options a customer selects, so that one product family with many possible variants does not need a separate stored BOM for every combination.
Configurable BOM Explained
Configure-to-order products, such as machines, enclosures, vehicles and custom equipment, can have thousands of valid combinations. Storing every combination as a BOM is unmanageable. A configurable BOM stores a base structure plus option groups and rules: if option X is selected, add these components and remove those.
Two common designs exist. A modular or planning BOM groups the choices into option families with percentage splits for forecasting. A variant or generated BOM creates a customer-specific BOM and routing when the order is entered, which then flows to MRP and the shop floor like any other.
ERP capability varies widely. Infor LN includes a product configurator for engineer-to-order and configure-to-order. SyteLine supports configurators with rule-based BOM and routing generation and can use the Product Configurator module. NetSuite and others typically need an add-on configurator. Without a configurator, teams often use phantom BOMs and kits as a lightweight approach.
Rule quality is the main risk. Missing constraints allow invalid combinations that cannot be built, and engineering has to fix the order after it has been promised.
Why It Matters
- It avoids maintaining thousands of near-duplicate BOMs and routings.
- Quotes and delivery dates get faster and more consistent when rules enforce valid combinations.
- Forecasting by option share supports building common modules ahead of orders.
- Cost accuracy requires that every option carries its own components and operations.
In Practice
A control panel family has 4 enclosure sizes, 3 voltage ratings and 6 optional modules. That is far more than 70 combinations by count, yet only about 25 components differ. A configurator creates the order-specific BOM from selections, and rejects a 24V module on a size 1 enclosure that physically cannot fit it.
Frequently Asked Questions
What is the difference between a configurable BOM and a standard BOM?
A standard BOM is fixed. A configurable BOM changes based on selected options, usually through rules or a configurator.
What is a planning BOM?
A BOM that groups options with forecast percentages so MRP can plan common modules before exact orders arrive.
Do I need a configurator for this?
Not for a handful of variants. Phantoms and option items may be enough. A configurator pays off once combinations number in the hundreds.
Related Terms
BOM (Bill of Materials)
A BOM (bill of materials) is the structured, hierarchical list of components, sub-assemblies, and quantities required to produce one unit of a parent item, and it is the primary input MRP explodes to calculate material requirements.
Phantom BOM
A phantom BOM is a subassembly that exists in the bill of material for engineering clarity but is never stocked or built as its own order. Planning blows straight through it, passing demand directly to its components on the parent job.
Multi-Level BOM
A multi-level BOM lists a finished product and each of its sub-assemblies and components in nested levels, so you can see the full structure from the end item down to raw material, rather than only the immediate children.
CTP (Capable to Promise)
CTP (capable to promise) is an order promising method that goes beyond available inventory by simulating whether required material and work center capacity can be obtained in time, returning a delivery date the plant can actually achieve.
Go Deeper
SyteLine BOM Management & Optimization with AI
Optimize SyteLine Bill of Materials with AI. Automated BOM validation, cost rollups, and engineering change management for Infor CloudSuite Industrial.
How to Set Up Phantom BOM Items in SyteLine
Step-by-step guide to setting up phantom BOM items in Infor SyteLine for simplified production planning, including item configuration, BOM explosion, and MRP behavior.
Working with Configurable BOM in a live environment? Our engineers do this every day - and our AI agents automate most of it.
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SAP Variant Combination and Test Scope Calculator
Estimate the raw and valid number of variants for a configurable product and size a realistic sample for testing.
Keep exploring
Free tools
- SAP Variant Combination and Test Scope CalculatorEstimate the raw and valid number of variants for a configurable product and size a realistic sample for testing.
- SAP Configurable Material Test Matrix WorksheetTrack each test configuration with expected and actual BOM item counts and price, so every dependency change is proven before release.
- Configurable BOM Option Cost and Price Rollup WorksheetRoll up cost, labor hours and price for a configured product. Each BOM line has an option group, a selected flag, scrap, labor and target margin, and totals update as you toggle options.
ERP fixes and how-tos
- Product Configurator in Sage X3: How to Set Up Configurable ItemsHow to approach configurable products in Sage X3: features and options, rules, generated BOMs and routings, and when a configurator or a simple option BOM is enough.
- How to Maintain the BOM and Routing in SyteLineHow to add components, operations and effectivity dates to a SyteLine bill of material and routing, and why edits do not reach jobs that already exist.
- Infor LN planning BOM: how it works, setup and use (and what people mean by SIC planning)How a planning BOM works in Infor LN Enterprise Planning, how to set it up and use it for family-level planning, and a note on SIC planning searches.
Runs with your ERP
- Infor CPQ with Infor SyteLine: Configurator in Order EntryHow Infor CPQ opens from SyteLine order entry for configurable items, returns validated options and creates the order line. Setup, pitfalls, alternatives, FAQ.
- NetSuite CPQ: Configurator and Manufacturing SuiteApps with work ordersHow NetSuite CPQ SuiteApps configure complex items on transactions and create work orders from configured materials and routing. Setup, pitfalls and AI uses.
- SAP CPQ and S/4HANA variant configuration: LO-VC vs AVCHow SAP CPQ works with S/4HANA configurable products using LO-VC and Advanced Variant Configuration: flows, setup, pitfalls, alternatives and private AI.
Guides
- Product Configurator Integrated With ERP for Pump and Valve MakersConnect a product configurator to your ERP so valve and pump orders arrive with a correct BOM, routing and price, and avoid spreadsheet handoff errors.
- Infor Product Configurator Setup in LN: Configure-to-Order GuideInfor product configurator setup in LN: feature and option models in tipcf0501m, generic BOMs, constraints and configure-to-order sales entry, step by step.
- Configure-to-Order Setup in Infor SyteLineSet up SyteLine configure-to-order with product configurator rules, option selection, BOM explosion, and pricing for custom-configured manufactured products.