Following are the Purchasing attributes and their possible values. You set these attributes when defining or updating items.

Purchased
Indicate whether to purchase and receive an item. Turning this option on allows you to set the Purchasable attribute.
This is an item defining attribute. If you turn this option on, the item is automatically assigned to the default category set for the Oracle Purchasing functional area.
If an item is vendor managed, you must turn on this option.

Purchasable
Indicate whether to order an item on a purchase order. You can set this only when Purchased is turned on.
Turning Purchasable off allows you to temporarily restrict the ability to buy. This attribute is optionally set by the Item Status code.

RFQ Required
Indicate whether to require an item quotation when requesting an item. Oracle Purchasing defaults this value on requisition lines for this item.  Leave this field blank if you want Inventory to use the value defined in the Purchasing Options window for transactions involving this item.

Taxable
Indicate whether the supplier charges a tax. Oracle Purchasing uses the taxable status together with the tax code you associate with a location to determine whether a purchase order shipment is taxable, and what the tax code that applies to this shipment is. Leave this field blank if you want Inventory to use the value defined in the window for transactions involving this item.

Tax Code
Select the appropriate tax code for the item. The tax code shows the tax authorities and rates that are available to use for this item. You must select the taxable attribute to enable this field.

Receipt Required (Three–Way Invoice Matching)
Indicate whether you must receive an item before you can pay the invoice. Leave this field blank if you want Inventory to use the value defined in the Purchasing Options window for transactions involving this item.

Inspection Required (Four–Way Invoice Matching)
Indicate whether to inspect an item upon receipt from the supplier, before paying the corresponding invoice. Leave this field blank if you want Inventory to use the value defined in the Purchasing Options window for transactions involving this item.

Outside Processing Item
Indicate whether you can add the item to an outside processing purchase order line. You can turn this option on only if Purchased is also on. In addition, this option controls whether you can attach an item to a resource in the Resource window.

Outside Processing Unit Type
Select an option to determine the quantity of an outside processing item you requisition, purchase and receive:
Assembly You purchase an outside processing item based on the number of assemblies you ship to the supplier.
Resource You purchase an outside processing item based on the number of assemblies times the resource usage rate or amount.

List Price
Enter the value that Oracle Purchasing uses as the default price on a purchase order, requisition, RFQ, or quotation. Oracle Receivables uses this value as the default unit selling price on a transaction. Note that this is the original inventory item price used by Purchasing and therefore should be used as a guide only.
When performing supplier inventory replenishment, a List Price must be specified in order to automatically generate a requisition.

Market Price
Enter the market value for an item. Oracle Purchasing copies the market price to the purchase order lines you create.

Price Tolerance
Enter the price tolerance percent, the maximum price percentage over the normal price range for an item. For example, if the tolerance percent is 5, the maximum acceptable price on a purchase order is 5% over the requisition price. Any purchase order price 5% above the requisition price is unacceptable, and you cannot approve the purchase order.

Receipt Close Tolerance
Enter the percentage tolerance Oracle Purchasing uses to automatically close purchase order shipments. Oracle Purchasing automatically closes a shipment when your unreceived quantity is within the quantity tolerance percentage of the shipment.
For example, if the original shipment quantity is 50, and you enter 10 here (10%), Oracle Purchasing automatically closes the shipment for receiving when you receive 45 or more.
Closed for Receiving is a status change only. You can receive additional items against the shipment later.

Invoice Close Tolerance
Enter the percentage tolerance Oracle Purchasing uses to automatically close purchase order shipments. Oracle Purchasing automatically closes a shipment when your uninvoiced quantity is within the quantity tolerance percentage of the shipment.
For example, if the original shipment quantity is 50, and you enter 10 here (10%), Oracle Purchasing automatically closes the shipment for invoicing when you invoice match 45 or more.
Closed for Invoicing is a status change only. You can invoice match additional items against the shipment later.

Encumbrance Account
This attribute is controlled at the Organization level only.
Enter the default encumbrance account Oracle Purchasing uses when an item is received. If the item encumbrance account does not exist, Oracle Purchasing uses the subinventory account. You encumber, or reserve against funds, when the purchase requisition or purchase order is approved. When you deliver into a subinventory you reverse the encumbrance. The total receipts plus encumbrances equals your total funds spent.

Expense Account
This attribute is controlled at the Organization level only. Enter the default inventory account for expense items. This attribute is used only when Inventory Asset Value is turned off. Oracle Purchasing debits this account when you receive an item into inventory only if the item is being expensed. If you receive into an expense subinventory, Oracle Purchasing uses the expense account you assigned to the subinventory first; if you do not define the account here, Oracle Purchasing uses the expense account assigned to the item.

Asset Category
Enter the asset category to which the item belongs. Oracle Assets uses this to classify your fixed assets. All assets in a category share default information, such as the accounts used when you post to the general ledger. You can enter this field only if you use Oracle Assets.