In addition to Doc's comments: (1) is there a directory, under your c/documents and settings/ named filename?  In the libname statement you must be pointing to an existing directory. (2) In the rollowing datastep, did the temporary file rel_analysis already exist before you ran the code?  Regardless, I don't see the point of this datastep. data rel_analysis_bin; set  rel_analysis; run; (3) If the temporary file rel_analysis exists, your last datastep only needs to be: data tume.rel_analysis_bin;   set rel_analysis ;run; ... View more