[1.6] Used to request a receipt.
Only supported for Version 1.6.
If this property is set, a Receipt-Notification-To form variable will be added to the request, and a receipt will be requested. Generally this should be the same as DataFrom.
By default, the adapter will request a GISB-Acknowledgement-Receipt, signed with PGP and delivered synchronously in the HTTP reply. You may set ReceiptSecurity to request a different type of signature, or no signature at all.
This property is not available in the Receiver.