commissioning

This term is defined in ECSS-Q-ST-70-58C as
planned and documented series of inspections, adjustments and tests carried out systematically to set the installation into the specified technical operation

This term is defined in ECSS-S-ST-00-01C as
verification and validation activities conducted after the launch and before the entry into operational service either on the space segment elements only or on the overall system (including the ground segment elements)