Amendment includes the additional reference point Mx into the Y.3810 “Quantum key distribution network interworking – framework”, Figure 2, that describes a reference model. Mx is responsible for the QKDN manager to communicate management information with other QKDN manager. So Amendment includes the following changes: Revision of Figure 2 of Y.3803 – A functional architecture model of QKDN in clause 7 Functional elements of key management to include the Mx reference point and an editorial correction on key relay.