Understanding Net Change Planning Schedules

You can set the Generation Mode processing option to use net change processing if you want to have Regeneration and Net Change versions. With net change processing, the system includes only those items that have changed since the last generation. Use the Net Change Review program to determine which items to include in the net change generation.

DRP Net Change, MPS Net Change, and MRP Net Change are versions of the MRP/MPS Requirements Planning program. Use a processing option to specify net change. You can further define the data selection to include only specific items that appear on the Work With Net Change Summary form. When you run DRP Net Change, MPS Net Change, or MRP Net Change, the system:

• Evaluates selected information.

• Performs calculations.

• Generates a time series and messages for the selected items.

The system selects items from the Net Change Review program that are based on:

• Bill of material changes.

• Inventory transactions.

• Forecast adjustments.

• Work order changes.

• Purchase order changes.

• Lead time roll-up that results in new lead time values.

• Sales order changes.

• Changes in parent order requirements.

You should run net change on a regular basis to continually update the schedule. The program writes to the Action Message, Pegging, and Time Series tables. You can view the information that is generated by this program online by using the time series and message review programs.