Are these data _null_ steps necessary? Unless I am missing something, consider a simpler approach like:   %macro load(folder, file, load=1);     %local path;     %let path=%sysfunc(quote(&folder.&file));     %put NOTE: path=&path;     %if &load=1 %then %do;       proc import datafile=&path out=data dbms=csv replace;       run;     %end; %else;       %put NOTE: not imported. load=&load.;     %end;   %mend  load;     %*-- usage example --*;   %load(c:\my folder\, my file.csv) ... View more