The Inventory and Expenses tab includes the list of inventory items and raw materials that are transferred to the subcontractor company for specific processing. Generally, this document is generated based on a Purchase Order (Order for Processing) document. Alternatively, you can create this document manually. The item amounts show the values of the materials transferred for processing.
Note. Items that are services cannot be transferred to processing.
The "Invoice (create)" form. The Inventory and Services tab
To add an inventory item, click the Add or Pick button (refer to Using the pick operation). In the Item column, select an item from the Items list or create a new item. For more details, refer to Items. Alternatively, you can import the list of items with all the details from an Excel document. For this, click the 
button on the table toolbar and follow the step-by-step instructions in the appeared window.
The Characteristic column is available if the Enable Item Characteristics option is selected on the Administration > Settings > Purchasing and Warehouses form. In this column, you can specify additional properties (such as size, color, and so forth) of each listed item if the Use Characteristics option is selected for the item in its master record (see Items).
The Batch column is available, if the Enable Batches option is selected on the Purchasing and Warehouses form. In this column, you can specify the batch (lot) number for the items for which the Use Batches option is selected. . To learn more about the item settings, see Settings: Purchasing and Warehouses.
The Serial Numbers column is available if the Use Serial Numbers option is selected on the Administration > Settings > Purchasing and Warehouses form. For each serialized item (for which the Use Serial Numbers check box is selected on the Items form), click in the column to open the Serial numbers dialog box. In this dialog box, you must enter the serial numbers according to quantity of the item.
In the Specification column, you can select a specification to be used for the item if item is made of other items or materials.
In the Quantity column, you can specify the item quantity and in the UOM column, you can select an UOM for the item if the Multiple UOMs per Item option is selected on the Administration > Settings > Purchasing and Warehouses form.
In the Delivery Terms column, specify the entity's delivery terms for each item.
If the Enable Additional Price Factor option is selected on the Administration > Settings > Sales form, you can select a particular factor defining which price list must be used.
The Price column is populated automatically if prices are available from the appropriate price list (see Item Pricing). You can enter the prices manually.
The Avg Cost Price column shows the average cost of the item (for information). The column appears if you click Fill > Average Cost Price on the toolbar.
The Auto-Discount % and Auto-Discount columns are available if the Enable Automatic Discounts and Markups option is selected on the Administration > Settings > Sales form. Non-zero values in these columns indicate that one or more discounts are applied because their conditions are met in the document. If you change any line in the document, click the Auto button to recalculate the automatic discounts. For more information on discounts, refer to Overview of Trade Discounts.
The values in the Amount column are automatically calculated for each item according to the specified price, quantity, and discount.
In the GL Accounts column, you can view the default accounts to be updated by this transaction. If needed, you can replace them with other accounts.
By default, in the Content column, the item description appears.
In the Comment column, you can enter some additional information about an item.
The tab toolbar buttons
Use the Up and Down ( 
) buttons to rearrange the items in the list.
To view the cost of items, click Fill on the toolbar and then select Average Cost Price button.