To register your branded app you will need to register an App ID, and then add a new App
An App ID identifies your app. It is a two-part string used to identify one or more apps from a single development team. There are two types of App IDs: an explicit App ID, used for a single app, and a wildcard App ID, used for a set of apps.
To register an App ID follow these instructions:
Login to App Store Connect as an Admin or Account Holder
Go to Certificates, Identifiers & Profiles in your Apple Developer Account
Go to Certificates, ID's and Profiles
Select Identifiers and click Add (+) in the upper left corner
Select App IDs and click Continue
Platform: Select iOS, watchOS
Description: enter a description of your App ID - for example, "MyBrand App ID"
AppID Prefix: select the Team ID (this should be auto-selected for you)
Bundle ID: Select Explicit and enter the Bundle ID provided by Pepperi. It will look like a backwards domain name, such as com.mycompany.myapp
Capabilities: Don't select any capabilities. the relevant ones will be marked.
Click Continue, review the information and then click Register
Before you can upload a build of your app to App Store Connect, you must first create it in your App Store Connect account.
To create an App follow these instructions: Add an App to your Account
Name: You'll need to give your app a name, as it will appear on the App Store, of up to 30 characters.
Bundle ID: an ID embedded in the app code provided by the developer of the app. You'll see a recommended Bundle ID provided by Pepperi in the field. Type this one.
SKU: A unique identifier for your app that is only used in reports. Examples: 90045, MyAppV1, etc.
After you create an App Store Connect record for an app, the app appears in My Apps, and the app status is Prepare for Submission. You can select the app on this page to view and edit app information.