Manufacturing Resource Planning (MRP-II):

This is a development in MRP that seeks to address some of its shortcomings. It includes all elements of MRP. An outline of the elements of an MRP II system is illustrated in Figure. Though, MRP-II includes the following four major developments from MRP:

1. Feedback

2. Resource Scheduling

3. Batching Rule

4. Software extension programs

Feedback

MRP-II contains feedback from the shop floor environment on how the work has progressed, to all of the levels of the schedule so that the next run may be updated on a regular basis. For this reason it is also known as Closed Loop MRP.