TSS UNLOCK not working

Document ID : KB000100182
Last Modified Date : 05/06/2018
Show Technical Document Details
Introduction:
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.
Question:
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. 
Answer:
Please apply fix ST01743 to resolve the problem.