Question: In UTRAN Iur interface RNSAP signalling, for 'Periodic' and 'On Modification' reporting, what is indicated by 'Information Not Available' in the Requested Data Value Information IE?
Option 1: The entire requested data set is available but incomplete.
Option 2: All parts of the requested information were available at a previous reporting interval.
Option 3: At least one part of the requested information was not available when initiating the Information Reporting procedure.
Option 4: The reporting procedure has been successfully initiated without any data.
Explanation: This is correct because, for 'Periodic' and 'On Modification' reporting types, 'Information Not Available' specifically signifies that at least one component of the requested information was missing at the moment the Information Reporting procedure was initiated. This ensures the receiver understands the scope of available data.