ERROR:  An exception has been encountered.
Please contact technical support and provide them with the following traceback information:

The SAS task name is [procedure-name]
Exception occurred at (06D81593)
Task Traceback
Address   Frame     (DBGHELP API Version 4.0 rev 5)
06D81593  0788C3EC  sasxattr:\ysachg.c\ysachg 119 +(0x3)
071BDDFF  0788CB8C  sasyoio:\yosopen.c\yyoopen 4112 +(0x1B)
071B7071  0788CBEC  sasyoio:\yosopen.c\yoopen 671 +(0xB)
...

%macro checkDSV(dset);
   %let dsid=%sysfunc(open(&dset));
   %let rc=%sysfunc(close(&dsid));
   0
%mend checkDSV;

data tmp;
   WEKcode="1234567"; 
run;  
                                                                                                         
%macro CzCmF(infile);
   proc print data=&infile;
      label WEKcode="WEKcode"
      %if %checkDSV(&infile) %then %do;
      %end;;
   run;
%mend CzCmF;
%CzCmF(tmp);  

%macro CzCmF(infile);        
   %let val=%checkDSV(&infile);
   proc print data=&infile;    
      label WEKcode="WEKcode"   
      %if &val %then %do;      
      %end;;                   
   run;                        
%mend CzCmF;