After generating production plan using MRP, have you ever wondered if we have enough resource capacity to execute the production plan in the shop floor successfully? Capacity Requirement Planning (R3382) can be used to calculate / identify current total available capacity and compare it against the planned capacity to validate if you have enough capacity to execute the production plan. This helps planners to decide if they need to make changes to production plan and/or use alternate/additional resources for planning. The following documents explains how to setup and execute capacity requirement planning for effective manufacturing planning.
Capacity Requirements Planning Setup and Overview (Doc ID 1433142.1)
Capacity Requirements Planning (CRP) FAQ (Doc ID 870316.1)