Why Does Keyword Tracker Says My API Is Wrong?

Hello,

I entered my API Key when I created my account. However when I use the tool I get a message saying there's an error on my API.

First, I entered the complete code: ca-pub-XXXXXXXXXXXXXXX

Then, after I got the error message, I deleted ca-pub- and just placed the numbers but I still got the message.

What am I doing wrong?

 

This is the publisher ID not API.

You can get API form google : http://code.google.com/apis/ajaxsearch/signup.html

 

I think that API key is discountinued
Whoever has got has got it
(different from the Ajax API)