PIN & PUK codes are deleted in the GSM line, when an upgrade is made from an early BlueNote version - past SMSV6R1 Ptf88.
Users are advised to write down PIN & PUK before upgrade – but it have happened, that this info have been mislaid in the process. 

The PIN & PUK codes can be recovered using the command:

    wrkdtaara *allusr/PDUPINCDE