Field help (DINVCND) 

The presence of this field depends on the entry transaction used.
An invoicing term can be used to determine the invoicing schedule of the order line. This invoicing term must be entered when the order line applies to a product of the Sold but not Deliverable type. Otherwise, it cannot be entered.
The field is initialized based on the invoicing term entered on the order header, or else, based on the condition specified for the product.

In the case of Free items, the invoicing term is initialized by order of priority, as follows:

In the case of BOM parent products, which are not deliverable, the invoicing term is initialized based on the invoicing term entered on the order header, at the Invoicing tab level. By default, the term is initialized on each line (component and parent) based on the invoicing term specified on the line product. It can be accessed and modified on each line separately. If the invoicing term is not specified, the scheduled invoices are not generated. If the invoicing term is modified on the header, a dialog box opens suggesting to transfer the modification to the document lines, as for normal products (see the notes below about products).
If the invoicing term is modified on the parent product, a dialog box opens and suggests that the modification is transferred to all component lines. If you answer Yes, the modification is applied to all component lines that have not been closed, subject to an invoice, or linked to a billing plan. On order modification, a message is displayed when modifying the selected schedule to inform you that the schedule of the relevant lines is to be modified.

Notes applying to all products:

When the invoicing term is modified on the document header, a dialog box opens and proposes to apply the modification to all document lines, based on the following options:

Only the lines that have not been closed or subject to invoicing are concerned.

The selected invoicing term can only be modified once the order line is invoiced partially or totally. On order creation, when this choice is modified on an order line, the schedule is immediately revaluated based on this new invoicing term. On order modification, a message is displayed when modifying the selected schedule to inform you that the schedule of the relevant lines is to be modified.

You can access the invoicing terms management in view mode from the Actions icon. In this function, use the Simulation action to simulate the scheduling of expected invoicing open items.

To display the invoicing schedule of an order line, click Schedule form the Actions icon displayed at the beginning of a line.