APCYNAR is the CA MATUNE program that gets involved during the importing of list datasets( Narrow files).
Checking on the job log for any message, The IMS profile cluster CAMAT.R12.RRDSIPP got out of space condition, as one could see on the joblog :
IEC161I 056-084,Z9472,APCYANAR,APCBIPP1,,,hlq.CAMAT.R12.RRDSIPP, 696
Release : 12.0
Component : CA MAINFRAME APPLICATION TUNER
There is a job in CAMAT.R12.CNTL member APCIJRDR, that will back up, delete/define the cluster and load the data using repro.
Running this job with allocation size bigger than current should solve the issue.