After 15 minutes of inactivity, Top Secret issues the followimg error:
DFHAC2001 05/11/18 10:41:19 CICSICCF Transaction 'TSLK' is not recognized. Check that the transaction name is correct.
TSLK is a transaction that handles terminal locktime in the z/OS version of Top Secret, but it is not implemented in the VSE version.
Please apply APAR T387525.