An App ID is a unique identifier that differentiates your app from others in the App Store.
Perform the following steps to create a new App ID:
In the Certificates, Identifiers and Profiles section of the Apple Developer Center website, click on the Add (+) button under the identifiers section.
Enter a name for your App and a Bundle ID (previously set in the Config.xml file of your application).
After submitting the information, you can see your App ID in the table view of iOS App IDs.