There could be a number of reasons for this:
- IP addresses for the domain name are not allowed
- You cannot use custom ports in the URL (e.g. http://www.test.com:8080/index.php)
- You cannot use the words Yahoo or Y! in the application title or description
If none of those are the reason, can you please post the information that you adding in to the form when creating the app? We would need the app url, domain url, title, description, etc.
Thanks.
Jonathan LeBlanc
Technology Evangelist
Yahoo! Developer Network
Twitter:
jcleblanc