What is ERP (enterprise resource planning)?

ERP: definition and purpose

An ERP system, literally enterprise resource planning, is the central software in which a company runs its operations. Instead of separate programs for quotes, stock levels, production and invoices, all areas work on one data basis. When sales changes an order, purchasing, warehouse and accounting see the change immediately.

Especially in manufacturing and trading SMEs, this prevents duplicate entry and breaks between systems. An ERP answers questions such as: what is deliverable? What needs to be reordered? What is the contribution margin of an order? And it delivers the figures that management and tax advisors need, without having to gather data laboriously from several sources.

Modules and deployment models

Typical modules are sales and order processing, purchasing, warehouse management, production planning, financial accounting, controlling and HR. Many systems can be extended for specific industries. An ERP is operated either on your own servers (on-premises) or as a cloud solution (SaaS) with a monthly fee; hybrid forms are also common.

Well-known vendors include SAP, Microsoft with Dynamics 365 Business Central and the partly open-source Odoo; there are also numerous industry solutions. What matters is less the name than how well the system fits your processes and how much customization is needed.

Real-world example: a metalworker replaces isolated systems

A supplier of metal parts uses one program each for quotes, warehouse and accounting, plus Excel lists for production planning. Data is typed in several times, stock levels rarely match, and delivery dates are based on estimates. With an ERP, order, bill of materials, production order, warehouse and invoice run seamlessly in one system.

The project does take months, though. First the processes are recorded and cleaned up, then master data such as items, bills of materials and customers is migrated, interfaces to accounting are set up and employees are trained. Anyone who skips this preparation carries old problems into a new system and pays twice later.

Common mistakes, limits and imple­menta­tion

ERP projects rarely fail because of technology; more often it is unclear goals, too many special requests and a lack of user involvement. The more a standard system is customized, the more costly updates become. Before selection, decide which processes should fit the standard and where your company genuinely needs something special.

Nano Concepts supports requirements analysis, develops interfaces, for example to DATEV, SAP or online stores, and extends ERP systems with custom applications where a standard function is not enough, such as a customer portal, an employee app or a dashboard for management. This keeps the system clear and update-ready.

• Record and clean up processes before the rollout
• Clean master data carefully before migrating it
• Limit customizations to what is necessary
• Involve users early and train them thoroughly
• Plan interfaces to accounting, store and CRM from the start