In addition to the Mac App Distribution certificate, one also need a Mac Installer Distribution certificate. load your CSR file and download the generated certificate.create your Certificate Signing Request as indicated, click Continue.in the next page select Mac App Distribution, click Continue.in the Production section choose Mac App Store.click on All under the Certificates menu.You need two types of certificate as a developer to submit an app to the mac appStore: give a description to your app, choose Explicit App ID and enter a Bundle ID (usually something like ).click the + sign on the upper-right part of the screen.click on App IDs under the Identifiers menu.select macOS in the top-left dropdown list.The very first step to be able to send a mac app to the appStore is to create a unique Bundle ID for it:
