Base SAS

[gamotte]

No, S1000 begins with "S1".

Maybe you want to modify your z array definition to

array z(*) s:;

[vishalrajpoot3]

Ohhh yes, that was the only issue. 

Thanks

[gamotte]

Not on my computer :

143  proc sql;
144      SELECT count(*) INTO :nvar
145      FROM dictionary.columns
146      WHERE LIBNAME="SASHELP" AND MEMNAME="YR1001"
147      AND NAME LIKE "S0%";
148  quit;
NOTE: PROCEDURE SQL used (Total process time):
      real time           0.05 seconds
      cpu time            0.00 seconds


149
150  %put &=nvar.;
NVAR=     503

Try to print the dimensions of each of your arrays to see if they match :

dimz=dim(z);

put dimz=;