Entering command TSS UNLOCK and entering the passphrase to unlock the session allow use of 9 characters.

Document ID : KB000100416
Last Modified Date : 06/06/2018
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Issue:
Our passphrases on the parmfile are set to 10 characters. When we enter the TSS UNLOCK command to unlock a locked session; when entering the passphrase Top Secret allows us to use 9 characters to unlock the TSO session. A Sectrace; using TSS MODIFY SECTRACE(ACT,WTL) to trace the issue but when the trace was added to the ID the TSS UNLOCK command would not unlock the session even with the correct passphrase and we were unable to recreate the issue. Sectrace to be forwarded. The sectrace was done numerous times with the same result.
Resolution:
Please apply PTF ST01743.