2566673 - MDN Disposition-modifier-extension is error: insufficient-message-security in the AS2 receiver adapter

You use the AS2 receiver adapter to connect to your partner and you request an MDN from your partner. The messages in the AS2 receiver adapter are failing and in the Message Monitor you can see the following entry:

Catching com.sap.engine.interfaces.messaging.api.exception.MessagingException: javax.resource.ResourceException: javax.resource.ResourceException: MDN Disposition-modifier-extension is error: insufficient-message-security

In the XPI Inspector traces for this AS2 receiver channel you can see similar entries:

Catching javax.resource.ResourceException: MDN Disposition-modifier-extension is error: insufficient-message-security
at com.sap.aii.adapter.as2.ra.integration.ReceivedMDNProcessor.checkIsProcessed(ReceivedMDNProcessor.java:471)
at com.sap.aii.adapter.as2.ra.integration.ReceivedMDNProcessor.process(ReceivedMDNProcessor.java:443)
at com.sap.aii.adapter.as2.ra.jca.CCIInteraction.handleMDN(CCIInteraction.java:899)
at com.sap.aii.adapter.as2.ra.jca.CCIInteraction.send(CCIInteraction.java:787)
at com.sap.aii.adapter.as2.ra.jca.CCIInteraction.execute(CCIInteraction.java:650)
at com.sap.aii.af.app.endpoint.ModuleProcessorExitBean.process(ModuleProcessorExitBean.java:206)
at sun.reflect.GeneratedMethodAccessor558.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)

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SAP NetWeaver 7.3 ; SAP NetWeaver 7.4 ; SAP NetWeaver 7.5 ; SAP NetWeaver Process Integration, business-to-business add-on 1.0 ; SAP enhancement package 1 for SAP NetWeaver 7.3 ; SAP enhancement package 1 for SAP NetWeaver Process Integration 7.1

AS2, AS2 receiver, Disposition-modifier-extension, insufficient-message-security, MDN, Peer sent alert, iaik.security.ssl.SSLException, SSLException, Process Integration 7.11, PI 7.11, Process Integration 7.30, PI 7.30, Process Integration 7.31, PI 7.31, Process Orchestration 7.4, PI 7.4, PO 7.4, Process Orchestration 7.5, PI 7.5, PO 7.5, XI, AEX , KBA , BC-XI-CON-B2B-AS2 , Applicability Statement Protocol Adapter , Problem