SAP Knowledge Base Article - Preview

2527968 - SSL WildCard Certificates for SNI


The following warning is observed at the Web Dispatcher or ICM trace file (dev_webdisp or dev_icm, respectively):

*** WARNING => IcmIHandlePseForSni: Hostname '*' cannot be used for SNI! PSE 'PSEFILE.pse' will be ignored for SSL configuration 'ssl_config_X'!

  • "*" is just an example. The key point is that it refers to a wildcard certificate;
  • "PSEFILE.pse" is the PSE file that contains the wildcard certificate;
  • "X" refers to the index of the parameter "icm/ssl_config_X". It starts with zero.



  • SAP Netweaver release independent
  • Client/Server Technology - ICM (Internet Communication Manager)
  • Client/Server Technology - Web Dispatcher
  • Security - Secure Sockets Layer Protocol


SAP NetWeaver all versions


KBA , BC-CST-WDP , Web Dispatcher , BC-CST-IC , Internet Communication Manager , BC-SEC-SSL , Secure Sockets Layer Protocol , Problem

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