SAP Knowledge Base Article - Preview

2198167 - Redundancy issues - Infrastructure Administrator traffic lights showing abnormal roles and statuses in Active/Active multiserver system lanscape


  • You have deployed a multi-server SAP Contact Center System Landscape with several application servers, but all virtual units remain active.
  • SAP Contact Centre Virtual Units are getting active on multiple Instances togather
  • The normal scenario, would be to only have one Virtual Unit Active while its counterpart is set to spare in other nodes as shown in the example image below:
  • However, in the system with anomalies, what you see is simlar to the below illustration:
  • HAC logs show the following errors:
    • ERR> SecureContext::VerifyClientAgainstThis: Failed due to different certificates
    • Health set to [UNKNOWN] due to Hosting node has failed but is active
    • HTTP: none of the server addresses are locally assigned. IIS
    • Cannot activate the IP address [XXX.XXX.XX.XX] - another machine holds the address -> where the XXX represents an IP address used.
    • Raised major problem [24]: [No connection to the node]



SAP Contact Center


SAP Contact Center, on-premise edition all versions


CCtr, SCC, CCI, CRM-CCI, SAP Business Communication Management 7, IA, Virtual Units, Active/Active, Toguether, VU, VUS, HAC, Instances, Unknown exception, Couldn't find certificate issued to , KBA , CRM-CCI , Contact Center Infrastructure , 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.