Statement is not valid or it is used out of proper order.

[a13]

code:

%LET iterations = 5;
%LET winner = Lance Armstrong;
DO i = 1 to &iterations;
TITLE "First: &winner";

log:

1 OPTIONS NONOTES NOSTIMER NOSOURCE NOSYNTAXCHECK;

72

73 %LET iterations = 5;

74 %LET winner = Lance Armstrong;

75 DO i = 1 to &iterations;

__

180

ERROR 180-322: Statement is not valid or it is used out of proper order.

76 TITLE "First:" &winner;

WARNING: The TITLE statement is ambiguous due to invalid options or unquoted text.

77

78 OPTIONS NONOTES NOSTIMER NOSOURCE NOSYNTAXCHECK;

91

[novinosrin]

macro loops need macro syntax

%LET iterations = 5;
%LET winner = Lance Armstrong;
DO i = 1 to &iterations;
TITLE "First: &winner";

something like: 

 %macro a13;

%DO i = 1 %to &iterations;
TITLE "First: &winner";

%end;

%mend a13;

Your code doesn't ring the bell in what you want to accomplish 

[ballardw]

%LET iterations = 5;
%LET winner = Lance Armstrong;
DO i = 1 to &iterations; <- This DO belongs in a data step block of code. You may be thinking of a macro loop which would use %DO but still has a syntax error because you show no End or %end.