The Core Service server of the company is installed, configured and managed as "CoreService Master" (CSM) in the main branch. The CoreServices of the branches cannot manage or configure the CSM or a CoreService within another sub-branch. The CoreServices of the sub-branches are regarded as "CoreService Slave" services, CSS. All CSS are configured by the CSM.
If the CSM fails, the CSS switch automatically to an "insular mode", thereby providing the required services for the respective sub-branch. In "insular mode", the CSS cannot be configured. Hence, configuration mode and report mode are not available.
Once the CSM returns to normal operating mode, the CSS can be managed again by the CSM.