3260928 - The diagnostics agent certificate for P4 connection to Solution Manager is not valid anymore

• When trying to connect the Diagnostics Agent with the Solution Manager system the following error appears in the SMDSystem.log:

             [EXCEPTION]
             javax.naming.NoPermissionException: The agent certificate for the p4 connection to solman is not valid anymore., connection aborted.
             at com.sap.smd.agent.connection.ConnectionProperties.checkAuthenticationSettings(ConnectionProperties.java:303)
             at com.sap.smd.agent.connection.SMDConnectionTask.internalAttemptConnection(SMDConnectionTask.java:309)
             at com.sap.smd.agent.connection.SMDConnectionTask.access$000(SMDConnectionTask.java:51)
             at com.sap.smd.agent.connection.SMDConnectionTask$1.run(SMDConnectionTask.java:90)
             at com.sap.smd.agent.connection.P4JNDIContextHelper.executeInSecurityContext(P4JNDIContextHelper.java:141)
             at com.sap.smd.agent.connection.SMDConnectionTask.attemptConnection(SMDConnectionTask.java:85)
             at com.sap.smd.agent.connection.SMDConnectionTask.run(SMDConnectionTask.java:888)
             at java.lang.Thread.run(Thread.java:722)

• In the output of the connection script, the following error shows:

             ------- Prerequisites ----------
              - Java version OK.
              - No agent certificate found.
              - Prerequiste Check: OK
             --------------------------------

SAP Solution Manager 7.2