The CTM system identifier is a unique human-readable name that must be configured for each system in a system landscape. Please refer to section 5.3.3 - CTM System Identifier for further information on the CTM system identifier requirements.
The CTM system identifier is configured using the property curam.ctm.systemIdentifier. This property is set using the system administrator Property Administrator functionality in the application. Note that the property is contained in the Admin - System Settings category. After the value has been set, it must be published in order for it to be available to the system.
It is highly recommended that once set, this property value is not changed again. This is because changing it may cause confusion with regard to the origin of transported change sets when they are viewed on a target system.