[Net-amazon-devel] ISBN-10 ISBN-13 Error: 9780596100827 is not a valid value for ItemId. Please change this value and retry your request.

[<car...@20...>]

Hello,

Inspired by this article http://perlmeister.com/lme/prod-0812.pdf
I arrange myself a barcode scanner to make an inventory of my books.

(to be honest I am talking about the german version
of the document at http://perlmeister.com/snapshots/200810/index.html )

I am now using this example code:

use Net::Amazon;

my $ua = Net::Amazon->new(
        associate_tag => 'foobar',
        token         => 'xxx',
        secret_key    => 'xxxxxx',
	max_pages     => '1',
);

my $response = $ua->search(asin => "$ARGV[0]");

if($response->is_success()) {
	print $response->as_string(), "\n";
} else {
	print "Error: ", $response->message(), "\n";
}


I am not sure if the associate_tag is of any importance,
but it seems is just has to exist, no matter whats the value.
The token an scecret_key are what I also use for Amazon S3 service.

But this script works only for _some_  ISBN-10 or ISBN-13 barcodes
for example this works:

# perl x.pl 0596004613
[1]  Rob Flickenger, "Linux Server Hacks: 100
     Industrial-Strength Tips and Tools", 2003, $13.72,
     0596004613

But this ISBN-13 doesn't work, it's this book 
http://www.amazon.de/Linux-Server-Hacks-Bill-Hagen/dp/0596100825/ref=sr_1_1?s=books-intl-de&ie=UTF8&qid=1329597639&sr=1-1

# perl x.pl 9780596100827
Error: 9780596100827 is not a valid value for ItemId. Please change this value and retry your request.

Even not as ISBN-10

# perl x.pl 0596100827
Error: 0596100827 is not a valid value for ItemId. Please change this value and retry your request.

Any Idea why this only works with some books ?
Is this because I am located in Germany ?

I am clueless

Thanks
Carlos