Question: In UTRAN Iu interface RANAP signalling, if a `RELOCATION COMPLETE` message reaches the Core Network (CN) before the corresponding `RELOCATION DETECT` message, how should the CN process the `RELOCATION COMPLETE` message?
Option 1: The CN shall handle the `RELOCATION COMPLETE` message normally.
Option 2: The CN shall discard the `RELOCATION COMPLETE` message and await the `RELOCATION DETECT` message.
Option 3: The CN shall send a `RELOCATION REQUEST` to the RAN to re-initiate relocation.
Option 4: The CN shall respond with a `RELOCATION FAILURE` message.
Explanation: This is because receiving a `RELOCATION COMPLETE` before a `RELOCATION DETECT` does not necessitate special handling that would alter the normal processing flow of the complete message. The CN continues with the relocation completion process as if the messages were received in the expected order, ensuring continuity and minimizing potential disruptions to the ongoing relocation procedure.