MRP II or Manufacturing Resource Planning is a module in eresource's ERP solution that helps manage all resources in a manufacturing company. It covers functions like commercial planning, sales, master production scheduling, materials resource planning, and capacity planning. The MRP II module in eresource provides production scheduling capabilities and helps with detailed planning at the plant level for tighter control. MRP I refers to material requirements planning and determines what materials are needed, how much, and when, while MRP II refers to manufacturing resource planning and determines what products to make, how much, and when.