The Inventory and Expenses tab includes the list of inventory items and services that were sold to the customer. If revenue from sale of specific items require recognition during multiple sequential months, you can create deferrals for such items. For items which are sets—a set includes other items as components and selling the set means selling its components according to the specification—you can specify their components by selecting the specifications.
The "Invoice (create)" form. The Inventory and Services tab
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If you need to create a deferral for any item in the list, select the item and click Create / Cancel Deferral on the toolbar to invoke the Deferred Revenues dialog box (below in the topic). The 
icon in the first column indicates that for this item a deferral was already created. To cancel the deferral, click Create / Cancel Deferral on the toolbar and then Cancel Deferral in the dialog box.
The tab toolbar buttons
Use the Up and Down (
) buttons to rearrange the items in the list.
Click the Apply Auto-discounts (
) button to recalculate the applicable discounts if any data was changed in the document.
The Set Components button on the table toolbar is available if the Enable Sales of Sets option is selected on the Administration > Settings > Purchasing and Warehouses form). This button is active only for items of the Set type (for details, see Items.) For each item which is a set, you can select the Specification. To view a list of the set components, click the Set Components button on the toolbar - this opens the Set Components dialog box (below in the topic).
If you need to create a deferral for any item in the list, select the item and click Create / Cancel Deferral on the toolbar to invoke the Deferred Revenues dialog box (below in the topic). The icon in the first column indicates that for this item a deferral was already created. To cancel the deferral, click Create / Cancel Deferral on the toolbar and then Cancel Deferral in the dialog box.
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