Use this Inventory option in Options Configuration to specify the amount of purchase history to keep for an item whose Amount of Purch Hist field in the Inventory Maintenance window, the Codes tab, is blank.
This option works in conjunction with the "Type of Purchase History" field.
You can keep purchase history for a specific number of months or number of purchases. Enter a number from 01 to 60 to indicate the number of months or purchases.
For example: For most items, you want to keep 12 months of purchase history. Enter 12 in this field.
or
For most items, you want to keep information for the last 24 purchases. Enter 24 in this field.
You can override the default for individual items using the Amount of Purch Hist field in the Inventory Maintenance window, the Codes tab. For more information, refer to online help for Inventory Maintenance.
You can display the purchase history for an item if you click GoTo from the Inventory Maintenance window, then click View Item Purchase History.