Order BOMs (PP-BD-BOM) 
Purpose
In the course of improving customer focus, it is ever more important for businesses working with make-to-order production, to be able to react quickly and flexibly to the wishes of the customer. The majority of products, particularly in plant engineering and construction and mechanical engineering, are very complex and customer specific. In response to customer requirements postprocessing of the BOMs in the construction is often required. Often assemblies are also constructed from scratch for a customer.
Implementation considerations
Order BOMs can be used in various commercial processes. In this documentation two sample processes are described, in order to demonstrate the different purposes. Naturally elements of the two processes can be combined.
You create a product with many variants and work with the variant configuration. You create an order BOM in order to react to the special wishes of the customer, which you can not foresee in your configuration model. For single assemblies extra construction products may be required.
See:
Sales order processing for products with many variants
You create complex products for large, capital-intensive projects, such as those in plant engineering and construction. Each of your products is a unique specimen, specially constructed to meet the requirements of your customers. For different core components, you use material BOMs that you partly modify for a specific order. However, for each sales order, you also construct a part of the assemblies from scratch.
See:
Integration
Order BOMs are supported in the following components:
SD - Sales
LO – Variant Configuration
LO – Engineering Change Management
PP – Routings
PS – Project System
CO – Costing
PP – Requirements planning
PP – Production orders
Features
All changes, carried out by the design team, to fulfil the customer requirements for an assembly, are saved in an order BOM. The material BOMs of the standard product are not changed This allows the design the greatest possible freedom with the customer-specific development.
Furthermore, order BOMs guarantee total integration into the logistics value chain. An assembly that has been specially designed or changed for a customer, is uniquely identified in the logistics processes with sales order, sales order item and material.
You can create order BOMs for either configurable or non-configurable assemblies. During the integration of variant configuration and order BOMs, it is guaranteed that you can process, in the order browser, an order BOM, for example, which you created in variant configuration.
In the order browser you get an overview of the multi-level BOMs of a sales order item and you can navigate to the various process and evaluation functions for order BOMs.