From configuration to production: connecting CPQ, CAD/PDM, and ERP

In manufacturing environments such as bodywork manufacturing and machine manufacturing, product variation is the rule rather than the exception. Standard solutions are combined with modules, customer-specific modifications, and specials that require additional engineering.

In these industries companies need to maintain control over both the product and the process. This does not mean limiting variation but ensuring that information flows effectively throughout the organization and supports consistent decision-making. Together, CPQ, CAD/PDM, and ERP provide the foundation for this. In this article, we explain how effectively integrating these three systems helps keep processes manageable within your manufacturing company.

The role of CPQ, CAD/PDM, and ERP in one integrated process

Combining product variation with standardization requires a clear division of responsibilities throughout the process. The different systems should not operate as isolated silos, but work together across consecutive process steps as information is progressively developed and refined.

Three systems play a central role and together form the backbone of this process: CPQ, CAD/PDM, and ERP. 

• A product configurator or CPQ solution (Configure, Price, Quote) is often the starting point for creating a quotation or sales specification. The product is configured based on predefined rules and customer choices. At this stage, it also becomes clear whether the product is standard, modular, or customer-specific.

• CAD/PDM handles the technical setup and engineering. This is where the EBOM (Engineering Bill of Materials) and/or MBOM (Manufacturing Bill of Materials) are created, defining the product structure.

• ERP forms the execution layer. Here, the MBOM (Manufacturing Bill of Materials) is central, together with planning, purchasing, and production control.

The key is a consistent flow of information between these three layers, without manual interpretation or disconnected handoffs.

From EBOM to MBOM: translating engineering into execution

Some companies engineer directly in the MBOM. However, when the engineering department works with an EBOM, the transition from EBOM to MBOM is a critical point in the process. This is where the engineering design is translated into a structure that supports production and planning. The MBOM can be created in several ways:

• From an existing library in PDM or ERP, using standard modules and previously defined products

• From previous orders by reusing existing structures

• By combining existing components and previously used solutions

• From CAD/PDM as an entirely new structure for new customer-specific designs

Structuring these different sources effectively makes it possible to reuse existing product data and reduces duplicate work in engineering and production preparation.

Managing variants and specials within a single process

In industries such as bodywork manufacturing and machine manufacturing, variation is inherent in the product offering. Customer-specific requirements regularly result in deviations from standard designs. Different approaches are therefore combined within a single process:

• CTO (Configure-to-Order): products are built from standard modules

• ETO (Engineer-to-Order): products require customer-specific engineering

The aim is to use configuration wherever possible while adding specials through a controlled engineering process.

Importantly, specials should not be treated as isolated exceptions, but as part of the same product structure. This allows previously engineered specials to be reused as the basis for new orders.

Planning and control based on a single model

The way products are structured has a direct impact on planning and capacity.

Within production planning, capacity is allocated across available production slots. The product category determines the required preparation time and planning horizon. Standard and modular products can be scheduled further in advance than customer-specific specials.

Continuous visibility into required and available production capacity helps organizations stay up to date and make informed planning decisions. This supports both production and purchasing in making decisions based on current order information.

Connected data flows as the foundation for execution

The effectiveness of the process depends heavily on how information flows throughout the organization.

• CPQ determines the configuration, sales/quotation specification, and product classification

• CAD/PDM defines the technical structure

• ERP translates this into planning and execution

When these handoffs are automated and clearly structured, they create a consistent foundation for operations. This reduces the risk of different interpretations across departments and deviations during execution.

Conclusion

In industries such as bodywork manufacturing and machine manufacturing, product variation is unavoidable. The challenge is not to limit that variation but to create one integrated process in which standard products, modules, and specials can coexist.

The transition from EBOM to MBOM provides the link between engineering and execution. Combined with effective integration between CPQ, CAD/PDM, and ERP, this creates a way of working in which standardization and flexibility coexist within a single integrated process.

Isah has extensive experience and expertise across a range of manufacturing environments where product variation and standardization come together. Together with its partner ecosystem, Isah also offers standard integrations between CPQ, CAD/PDM, and ERP solutions, allowing this entire process to be effectively supported in practice. Curious about the possibilities? We would be happy to discuss them with you.