哪位前辈能详细介绍一下这些MRP CODE的含义啊

FLEX_ERP.Jerry

MRP Order Code	MRP Order Code Description
A	Planned discrete or lot for lot. Can be overridden by max, min or multiple quantity.
B	Order point planning. Handled by the order proposal report. Order point qty needed.
C	Order up to planning. Handled by the order proposal report. Order point needed.
D	Fixed order qty planning. Lot size, max, min or multiple quantity is needed.
E	Least unit cost planning. Order qty calculated using setup cost and carrying rate.
F	Part period balancing planning. Order qty calculated using setup cost and carrying rate.
G	Period order qty planning. Accumulates the gross requirements for the number of days given.
K	Blow through planning. No additional fields are required.
M	Manually planned. Demands for component parts are not generated.
N	Next Level Demand.
O	Master schedule level 0 part.
P	Phantom part planning. No additional parts are required.
T	Master schedule level 0 phantom part.

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