4.1.1 Data provided through the ITS interface U.K.
The VU shall be responsible to update the data that will be available through the ITS interface at a frequency determined within VU procedures, without any involvement of ITS interface. The VU data shall be used as a basis to populate and update the Data, the means by which this is achieved is specified elsewhere in the Regulation or if there is no such specification is a function of product design and is not specified in this Appendix.