You can launch the planning process for a material requirements plan (MRP) from a master demand schedule. This generates planning recommendations for all planned items. You can launch the planning process for a material requirements plan (MRP)
or a master production schedule (MPS). The planning process involves three phases for defining the MRP or MPS. The process uses the input from a master demand schedule or master production schedule to determine the quantities and timing of the items to be purchased.

To launch the planning process

1. Navigate to the Launch MRP window.
2. Enter the following parameters:
Plan Name: Select the MRP plan to launch.
Launch Snapshot: Valid values are Yes and No. Select Yes to launch the Snapshot.
Launch Planner: You must launch the planner if you selected Yes to launch the Snapshot.
Anchor Date: Enter a date, earlier or equal to the current date, that acts as a start date for repetitive planning periods.
Plan Horizon: Enter a date, greater than the current date, up to which the planning process creates an MRP or MPS. The default horizon is the current date plus the number of offset months set in the profile, MRP: Cutoff Date
Offset Months .
3. Choose OK.
4. Choose Submit.