Question: In sponsored data connectivity, when the PCRF includes the Sponsor Identifier and Application Service Provider Identifier in PCC/ADC rules, what is the implication for Charging Key usage and accounting record correlation?
Option 1: A unique Charging Key must always be assigned for sponsored flows, separate from non-sponsored flows.
Option 2: The same Charging Key can be used for both sponsored and non-sponsored IP flows, with correlation based on the Charging Key.
Option 3: The same Charging Key may be used for both sponsored and non-sponsored IP flows, but correlation of accounting records is based on Sponsor Identity and Application Service Provider Identity.
Option 4: Sponsored flows cannot use online charging when Sponsor Identifier and Application Service Provider Identifier are included in PCC/ADC rules.
Explanation: This option correctly reflects the scenario where the Sponsor Identifier and Application Service Provider Identifier are included in PCC/ADC rules. In this case, the same Charging Key can be used for both sponsored and non-sponsored flows, but to differentiate and correlate accounting records from multiple users per sponsor or application service provider, the system relies on the Sponsor Identity and Application Service Provider Identity rather than a unique Charging Key for each type of flow.