Distribution Resource Planning (DRPII or DRP-II) is an extended version of Distribution Requirement Planning (DRP-I). Distribution Requirement Planning is a process which is used to determine which goods or materials will be required at which location and at what time to meet the anticipated demand.

DRP-II includes maintaining the provision for major non-inventory items and resources such as labour, material handling systems, and storage space. It may include other resources such as finances, trucks, freight cars, etc. This information is then entered into an MRP-II ( Manufacturing Resource Planning) as gross requirements for estimating and calculating input flows and preparing the schedules of production activities.

The main goal of DRP-II is to eliminate or at least minimize the shortages and at the same time, reduce the costs incurred during ordering, transporting and storing or holding goods. It is also called as Distribution Replenishment Planning. It is a time based approach which estimates when inventory is expected to be depleted and accordingly replenishes the same on time.

It follows a tree-like approach wherein a central facility like a warehouse is connected to several regional facilities and supplies goods to them who in turn pass them on to other facilities in the hierarchy.

DRP Table forms an important constituent of the DRP-II mechanism, It includes several elements like:

i) Forecast demands
ii) Current inventory levels
iii) Safety Stock
iv) Expected Replenishment Quantities
v) Replenishment Lead Times

DRP-II works either with the pull or push approach. In the pull method, goods are moved up the network by fulfilling the customer orders. This is a localised approach and as such, customer demands are met in a better way. However, managing the inventory is an issue in this method. In the push method, goods are sent down through the network. It incurs lower costs due to centralised planning and storage of goods. Disadvantage of the push method is service levels can be affected if central planning is unaware of the actual demand. DRP-II ideally envisages to combine the efficiency of push with the service levels of pull.

See Distribution Resources Planning.