What is the difference between MRP and ERP?

In short: ERP systems manage a wide range of business processes such as finance, procurement and order management. MRP focuses specifically on material planning and production requirements. In many organizations, ERP systems store operational data while specialized planning platforms perform advanced calculations that optimize inventory and replenishment decisions.

ERP systems act as the operational backbone of the company. They store transactional data related to purchasing, finance, inventory movements and customer orders.

MRP software focuses specifically on planning decisions. Its objective is to calculate material requirements and ensure that production can run without interruptions while minimizing excess inventory.

In many organizations, ERP systems provide the data foundation while planning platforms perform the advanced calculations required to optimize replenishment strategies.

This distinction becomes particularly important when coordinating material planning with upstream production constraints managed through Production Planning and Capacity.

When both systems work together, companies gain the operational stability of ERP combined with the predictive capabilities of advanced Supply Chain planning.