How to convert date to is8601dt

[sasuser123123]

Hello!
I've a date 11/jul/2012

So I'm trying to convert this date to iso format.
I'm running the below program

Data new;
Set old;
DD=put(input(DD,best.),is8601dt.);
Run;

But I didn't get the out put,and the log shows invalid argument function input.

Could you please solve this query..

Thank you!

[Kurt_Bremser · Accepted solution]

This input string is clearly not a number, so the BEST. informat will fail.

Try DATE11. instead.

And the correct name of the ISO date format is either E8601DA10. (with hyphens) or B8601DA8. (without hyphens).

Maxim 1: Read the Documentation.