IDEAL DEBUG fails with 1-IDADERRP99E/ LOGMSG: SET-CMD-LINES COMMAND FAILED

Document ID : KB000112427
Last Modified Date : 29/08/2018
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Issue:
IDEAL DEBUG command fails with : 
 
Z00C ***** START OF IDEAL ERROR LOG ON date time  ***** 
Z00C 1-IDADERRP99E - INTERR: Internal system error 
Z00C SRVC=LOG FUNC= RC= PGM=SDBUGP 14.0 +510E   (or 15.x version and offset)
Z00C CALPGM= CURACT=AE ACTTYP=U USER=zzz ERRID= 
Z00C SYS=sss ENTTYP=PGM ENTNAM=xxxxxxx  ENTVER=nnn ENTSTAT=yyyy 
Z00C LOGMSG: SET-CMD-LINES COMMAND FAILED 
Z00C ******* END OF IDEAL ERROR LOG ON date time  ***** 
Environment:
z/OS 
CA IDEAL 
Cause:
Prior DEBUG failed which left the DEBUG member in CHECKPOINT/ROLLBACK status. 
Resolution:
Edit the DEBUG member and choose CHECKPOINT or ROLLBACK.
Or delete the member and start all over.