Definicja modified planning horizon

Time period from today, the planning date, up to the time of the substitution; that means, up to the date on which the superseding part in the supersession chain becomes valid.

A standard MRP run is executed within the planning horizon and outside of the horizon the system executes a modified MRP run; that means that non-firmed, planned receipts are deleted and new, planned receipts are no longer created. If the part to be planned is the last in the chain, the modified planning horizon corresponds to the planning horizon that is defined in Customizing for MRP.