How do i remove Operator Common Number Series 1

[cdcat77]

Hello Guys,
Please I am trying to remove 0 as an Operator Common Number Series;

OPERATOR COMMON NUMBER SERIES 0
3434
OPERATOR COM. DID. NUM. SERIES 0
3434

I keep getting this error below each time I try, I am probably not doing something right but I can't figure it out. Any help would be appreciated.

NANSE:NUMTYP=OD,NUMSE=0;
SURE? (YES/NO)
<Y
NOT ACCEPTED
NO REMOVAL ALLOWED

 

[parnum]

http://www.tek-tips.com/viewthread.cfm?qid=1743207