Question: What does an EPS update result IE value of "TA updated" indicate in a Tracking Area Update Accept message?
Option 1: Both tracking and location area updating are successful for EPS services.
Option 2: Tracking area updating is successful, but location area updating for non-EPS services or "SMS only" has failed.
Option 3: Location area updating for non-EPS services or "SMS only" is successful, but tracking area updating has failed.
Option 4: Both EPS and non-EPS services have been successfully updated.
Explanation: When the EPS update result IE value indicates "TA updated", it means that while the tracking area updating was successful, the location area updating for non-EPS services or "SMS only" did not succeed. This distinction is crucial for managing network resources and ensuring proper service delivery to users.