ERROR MSG, CONFUSED

[hellohere]

I have a macro (shorted version below) and run well without error MSG. 

The un-shorted version macro however gets a confusing ERROR MSG(below). What confusing is the code are identical.

But the MSG is not wanted since I am running with a huge loop. 

Any one?!

%macro n_parse(stx, endx, byper);
/*only sect on the spots needed to speedup*/
	
	data txx;
	do i=&stx. to &endx. by &byper.;
	output;
	end;
	run;quit;
%mend;

%n_parse(500, 1000, 5);

1           data txx;     do i=&stx. to &endx. by &byper.;     output;     end;     run;
                                                         -
                                                         22
ERROR 22-322: Syntax error, expecting one of the following: a name, a quoted string,
              a numeric constant, a datetime constant, a missing value, INPUT, PUT.

[Kurt_Bremser]

It's no use showing us the code that works. To help you with failing code, we need to see that code, and the complete log from it.

From the log snippet, it looks like the macro references were not resolved. Are there any macro quoting functions involved?

[Tom · Accepted solution]

That just means the BYPER is empty.  So you generated a data step like this one:

1230  data _null_;
1231    do i=1 to 5 by ;
                       -
                       22
ERROR 22-322: Syntax error, expecting one of the following: a name, a quoted string, a numeric constant, a datetime constant,
              a missing value, INPUT, PUT.

1232    end;
1233  run;