Section: 10.3 Field set to a not comprehended value
Content: The UE shall, when receiving an RRC message or PC5 RRC message on any logical channel: 1> if the message includes a field that has a value that the UE does not comprehend: 2> if a default value is defined for this field: 3> treat the message while using the default value defined for this field; 2> else if the concerned field is optional: 3> treat the message as if the field were absent and in accordance with the need code for absence of the concerned field; 2> else: 3> treat the message as if the field were absent and in accordance with clause 10.4.