It lists all the transactions that the relevant invoice line is connected to. The option is located at the right mouse button / F9 menu of the invoice lines. At invoice connections window, the dispatch/receipts, orders and demand slips, which invoice lines are in connection with, are listed respectively. By using "View" option at left bottom corner of the page, related slips are displayed and can be viewed.
Connected demand slip info can only be reached through purchase invoices. You can display for which demand lines that the purchase order (related to the purchase invoice) was generated for, to supply the related demands.
In case the slip connected to the invoice line supplies more than one demand slip, all the related demands can be reached.
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Delivery Date: The delivery date of the slip that the invoice is related to.