Question: What happens if a mobile station does not recognize or support an operation defined in a Facility IE during the recall alignment procedure?
Option 1: The mobile station shall copy the Facility IE and the common SS version IE from the Setup Container to the SETUP message without modifying the content.
Option 2: The mobile station shall use the cause #88 "incompatible destination" afterwards.
Option 3: The mobile station shall use the cause #29 "facility rejected" in the subsequent rejection of the CC establishment request and the recall alignment procedure has failed.
Option 4: The Facility IE is discarded, and NOT copied into the SETUP message.
Explanation: According to the text, if a mobile station does not recognize or support an operation defined in a Facility IE during the recall alignment procedure, it shall use the cause #29 "facility rejected" in the subsequent rejection of the CC establishment request and the recall alignment procedure has failed. This is because the facility alignment requires the mobile station to recognize and support the operation defined in the facility, and if it does not, the recall alignment procedure fails.