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3733783 - CPI error: Opening connection to backend failed: Timed out waiting for tunnel

Symptom

CPI connection fails and In CPI Monitor Message Processing errors with similar information below are perceived:

Connect timed out: destination-configuration.<region host>/IP

In Cloud connector following is perceived on the scc_core.trc in DEBUG level:

 2025-04-09 09:12:04,532 -0000#ERROR#com.sap.core.connectivity.tunnel.client.application.ApplicationClientConnectTask#Thread-9123#          #Unexpected exception while establishing application tunnel connection for tunnelId: account:///<subaccount ID>
io.netty.channel.ConnectTimeoutException: connection timed out: connectivitynotification.cf.br20.hana.ondemand.com/4.228.118.21:443


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Environment

SAP Cloud Connector Release Independent

Product

SAP Integration Suite 1.0

Keywords

Region host, cpi, connection, time out, timed out, tunnel, waiting , KBA , BC-MID-SCC , SAP Cloud Connector On-Demand/On-Premise Connectivity , Problem

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