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Usage of Latest Delivery Date 
● This function is only supported if you use SAP AFS.

If you use SAP ECC, you cannot use this function.
● This field is only shown on header and item level when the date profile contains the date type Last Delivery, and the date profile is assigned to the transaction type and/or the item category.
On header level, no default value is displayed in the field Latest Delivery Date. However, if you enter a value manually at header level, this value is adopted for all newly entered items.
If you copy an item, the latest delivery date is adopted for the newly created item as a default value from the source item. If the field does not contain a date at item level, the system checks whether there is a date on header level, and if so, adopts this as a default value in the newly created item.
Additionally, the system checks whether the requested delivery date lies before the delivery date. If the requested delivery date is after the latest delivery date or is the same date, you cannot save the sales order.
To change or update dates for a large number of order items more easily and quickly, you can change the requested delivery date and the latest delivery date for all items at the same time.
To do this in Mobile Sales, choose Mass Change, and enter the required dates for the requested delivery date and the latest delivery date.
If you change the latest delivery date in CRM E-Commerce, a dialog box appears on the user interface to assist with the selection of items. The following selection options are available:
● All items
● New items (that is, entries that you have just made)
● Items that have the same latest delivery date as that on header level.