All M items must have a Job Days allocation
Without exception, each of your M (manufactured) items must have a Job Days allocation in order to establish each item’s planning period and to generate realistic start and finish dates within the master schedule.
WARNING: Never artificially inflate allocations in an attempt to “trick” the planning system. Inflated allocations will have a cascading negative effect on other dates that corrupts the master schedule.
Maintain a Lead Days allocation against all P items
A Lead Days allocation must be maintained against all your P (purchased) items. The Lead Days is the number of calendar days allocated by MRP for procuring the item.
Bear in mind that the Lead Days is an “allocation” and is not the literal time it takes to receive the item from the default supplier. The allocation should take into account procurement time, receipt processing time, and extra time that may be needed to cover potential delays.
Also be aware that the allocation length may affect planned start dates for jobs that use the item. A shorter allocation may enable earlier planned start dates, but increases the risk of job delays from late POs. A longer allocation reduces the risk of job delays, but may contribute to later planned start dates.
WARNING: Do not artificially inflate item Lead Days allocations because all dates are inter-connected. Inflated allocations will push out other dates in a cascading fashion that corrupts the master schedule.
Strive for uniformity within supplier
Among items assigned to the same default supplier, apply consistent allocations to achieve uniform due dates on multi-line POs. The MRP Settings screen can be filtered by default supplier, which enables you to focus on sets of items by supplier.
Delivery Inquiry
To get a listing of actual delivery days associated with past PO receipts, you can click the Delivery tab at the top of the grid.
