Configuration managementmeans a systematic organisational, technical and administrative process to ensure that the consistency of the documentation and the traceability of the changes are established and maintained so that:
operational test scenariomeans a sequence of trackside and on-board events related to or influencing the Control-command and Signalling subsystems (e.g. sending/receiving messages, exceeding a speed limit, actions of operators) and the specified timing between them in order to test the intended railway system operation in situations relevant for ETCS and GSM-R (e.g. entry of a train into an equipped area, awakening of a train, overriding a signal at stop).