How to resolve a macro using call symputx?

[rajeshalwayswel]

data al;
input a;
cards;
11
12
13
14
15
16
17
18
19
20
21
22
23
run;

data _null_;
set al;
call symputx("n"||put(_N_,1.),a);
run;

1) can someone try it by above code to resolve macro variable and errors?

2) I think it error becoz of in function length.

3) Please try it only in using above code and got it using SQL...

 ERROR: Symbolic variable name N* must contain only letters, digits, and underscores.
NOTE: Argument 1 to function SYMPUTX('n*',20) at line 310 column 6 is invalid.
a=20 _ERROR_=1 _N_=10
ERROR: Symbolic variable name N* must contain only letters, digits, and underscores.
NOTE: Argument 1 to function SYMPUTX('n*',21) at line 310 column 6 is invalid.
a=21 _ERROR_=1 _N_=11

[PGStats · Accepted solution]

Format 1. cannot accomodate numbers > 9. Try:

data _null_;
set al;
call symputx(cats("n", _N_), a);
run;

[Kurt_Bremser]

Aside from the format error, it is usually not necessary to keep numbered lists of macro variables, as code can be created right off the dataset with call execute().