444 Purchase Order Instruction Code
TYPE=ID MIN=2 MAX=2
Code defining the disposition of any difference between the quantity ordered and the quantity available for shipment
AQ Add Quantity to Meet Minimum Weight Requirement
BO Back Order if Not Available
BX Back Order Not Allowed
NS Notify Prior to Shipment if Quantity Specified is Not Available
SA Substitution Allowed
SX Substitution Not Allowed