CBR2171E DFSMSrmm tape volume installation exit (EDGTVEXT) disabled due to an installation exit abend.

Explanation
 During the invocation of  the DFSMSrmm tape volume
installation exit (EDGTVEXT), the installation exit has  abnormally
ended.

System action
 OAM continues releasing object tape volumes to MVS™ scratch. The DFSMSrmm tape volume
installation exit (EDGTVEXT) is deactivated, and will not be invoked
again until either OAM has been stopped and restarted, or the installation
exit has been reactivated by issuing the LIBRARY RESET,EDGTVEXT command.

Operator response
 Inform your system programmer.

System programmer response
 Use CBR2165I messages to synchronize
for any object tape volumes released by OAM while the EDGTVEXT is
disabled.  Determine the cause of the installation exit (EDGTVEXT)
failure. LINKEDIT a new copy of the installation exit module  and
issue the LIBRARY RESET,EDGTVEXT command.

Programmer response
 None.

Module
 CBRWTXB1

Routing Code
 2,3

Descriptor Code
 11

Source
 Object Access Method (OAM)