The electronic means used must be able to transmit and store the payment or transfer order so that client and institution can refer to it. Institutions must use a technical system that identifies who issued the order and proves the client sent it, and an information system that immediately tells the ordering party in writing whether the order was accepted or rejected and why; where a material error caused the rejection, the possibility and method of correcting it must be stated. Banque du Liban sets the basic standards of that system.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.