SAP Knowledge Base Article - Preview

3006220 - Error when opening an RFC connection from ABAP environment - 400 Bad Request


Connection from the ABAP environment to on-premise systems fail with:

Error when opening an RFC connection (Timed out waiting for tunnel to open for tunnelId account:///...)

Cloud Connector log (ljs_trace) contains the following messages/error: handshake request for tunnel: account:///<subaccountID> and host <host>.abap.<region>|
... to open tunnel connection: Invalid status of handshake response: 400 Bad Request|



  • SAP Cloud Platform, ABAP environment
  • SAP Cloud Connector


SAP BTP, ABAP environment all versions


scc scp , KBA , BC-CP-CON-ABAP , ABAP Cloud to On-premise Connectivity service , BC-MID-SCC , SAP Cloud Connector On-Demand/On-Premise Connectivity , Problem

About this page

This is a preview of a SAP Knowledge Base Article. Click more to access the full version on SAP ONE Support launchpad (Login required).

Search for additional results

Visit SAP Support Portal's SAP Notes and KBA Search.