Use the EDG3LVVR USERMOD in SAMPLIB to update the tape drive display with the correct exit selected pool. The EDG3LVVR USERMOD updates IATLVVR to AWAIT MSGDISP for scratch mount. If you use EDG3UX71, you do not need to use EDG3LVVR.

Before you begin: Validate that the EDG3LVVR USERMOD does not conflict with any other modifications to the IATLVVR module.

The EDG3LVVR USERMOD updates IATLVVR to add a short wait to the verify function. The wait allows the setup function time to issue the IAT5210 message. A JES3 MCS console is required when using this USERMOD.

1. Define a JES3 MCS console.

   Refer to z/OS JES3 Initialization and Tuning Guide for details on how to define MCS consoles for use with JES3. You need to define an MCS console with logical association to JES3 and use it as the tape operator console to receive the mount messages as updated by DFSMSrmm. Use the JES3 CONSOLE statement with the TYPE=MCS keyword.

   Use the MCS console routing codes to select which JES3 issued messages are seen on the MCS console. JES3 routes the tape messages to MCS consoles with a route code of 3.

   This method cannot be used in a multi-system JES3 complex where tape drives are attached to a JES3 local processor, because DFSMSrmm can only correctly update the tape drive display on the global processor.

2. Install the USERMOD by using SMP/E.