How the Inventory Control AVL Pref Code Works In response to some of the questions/misunderstandings from our customers we had determined that the Preference Order assigned through the Inventory Control Module to the AVL's might be confusing.  Some of the users were considering "0" as the lowest and "1" as the highest. Preference order is a numeric field and the system considers "0" as the highest Preference then 1, 2, 3, . . . . .  The Pref that is assigned to the AVL's will dictate how other modules within the system (MRP, Purchasing, Kitting, Allocation) determine what is suggested or defaulted into the screens.  The system used to default in all AVLs with the Pref "0" now as a result of some customers considering "0" as the lowest we have made changes to the code so now the system will default all new AVL's to Pref of "99".  If all locations are equal to "99" then the system will consider them in alpha order.  But as soon as a user assigns 1, 2, 3 then they will be properly considered in that order throughout the system.  Note:  If the part is on a Customer BOM and assigned to that Customer then the Preference's from the Customer part number will dictate how other modules within the system (MRP, Purchasing, Kitting, Allocations) determine what is suggested or defaulted into the screens.   The 8.1 Update will automatically go through the system upon running the program and look for any "Blank" or "0" Pref and default them to "99".