Question: Upon receiving an Alert Service Centre request, what action does the SMS-IWMSC take if the service centre address is not valid?
Option 1: Generate a failure notification towards the requesting entity
Option 2: Buffer the request for potential future validation
Option 3: No further action shall be taken
Option 4: Redirect the request to a default SMS Centre
Explanation: According to the detailed behavior of the SMS-IWMSC, if the service centre address is not valid upon receiving an Alert Service Centre request, the SMS-IWMSC does not initiate any additional processing or response. This aligns with efficient handling of invalid requests in telecom networks, preventing unnecessary resource utilization.