CSVH0970E New extents were detected in LNKLST set(s).

Explanation
 Check CSV_LNKLST_NEWEXTENTS
found a problem in LNKLST set(s) that are being used by the system.
 CSVH0969I
has been placed in the message buffer for each LNKLST set that is
being used by the system.  It includes any data set in the LNKLST
that has expanded into a new extent.
  Programs
that use one of these LNKLST(s) to access a module in a new extent
will abend with a fetch error such as ABEND106.  The system recognizes
only extents that existed when the LNKLST was activated.  IBM® suggests that partitioned data
sets (PDS's) in the LNKLST be defined with only primary space.  A
PDS allocated with only primary space defined has only one extent,
which eliminates this exposure.

System action
 This check is performed against all LNKLST sets
in use by the system. The system continues processing.

Operator response
  Report this problem to the system programmer.

System programmer response
 Jobs that need to access a module
in a new extent may use a joblib, steplib, tasklib or a new LNKLST.
Defining and activating a LNKLST would make new extents available
to all jobs that start while the new LNKLST is current. The following
commands could be used to define LNKLST LNKLSTNEWEXTENT the same as
the current LNKLST and to make it the current LNKLST.  SETPROG LNKLST,DEFINE,NAME=LNKLSTNEWEXTENT,COPYFROM=CURRENT

SETPROG LNKLST,ACTIVATE,NAME=LNKLSTNEWEXTENT
 When message
CSV500I is issued indicating LNKLSTNEWEXTENT has been activated, use
the DISPLAY command to find the jobs that are still using any LNKLST
set reported by CSVH0969I.  These jobs might need to be restarted.
 D PROG,LNKLST,USERS,NAME=lnklstname

Problem determination
 See CSVH0969I in the message buffer which
reports the LNKLST sets and data sets that contain errors.

Module
 CSVHCGL1, CSVHCMSG

Source
 Contents supervision (CSV)

Reference Documentation
 For additional
information about managing an active LNKLST set see:  
 "Removing
  or Compressing a Data Set in an active LNKLST set" in z/OS MVS Initialization and Tuning Reference  
 "SETPROG
  command Updating LNKLST Concatenations" in z/OS MVS System Commands  
 "Displaying
  LNKLST Information" in z/OS MVS System Commands
 For information about how to view messages in the message
buffer, see Working With Check Output in  IBM Health Checker for z/OS User's Guide.

Automation
 N/A

Routing Code
 See note 35.

Descriptor Code
 11 is the default set by this check. See note 1.