Which system generates the gross requirements of each part in the inventory?

Enterprise resource planning (ERP) systems encompass a wide range of business processes, including finance, HR, and supply chain management, but MRP specifically focuses on the detailed scheduling and inventory management needed to meet production demands. While ERP may integrate MRP functionality, it is not solely responsible for generating gross requirements for inventory.

A manual inventory system relies on physical tracking and management of stock levels, often using spreadsheets or manual records. Unlike MRP, which automates the calculation of gross requirements, a manual system lacks the sophisticated algorithms to efficiently determine material needs based on production schedules, making it less effective for inventory management.

The master production schedule (MPS) outlines what products need to be produced and in what quantities but does not directly calculate the gross requirements for each component. Instead, the MPS serves as a primary input for MRP, which then derives the specific gross requirements of materials needed to meet the production goals set by the MPS.