1. Download the CSR file from the CMS
Log into your CMS and open the “Certificates” tab at the end of the left menu.
In the new tab, you can click on “Create CSR file” at the iOS Certificate section and the file will be downloaded to your computer.
2. Open the Apple Developer Portal (https://developer.apple.com) and switch to the your developer account for the app.
3. Switch to the “Certificates” menu.
4. Click on the blue “+” button. 
5. Select the following option and click on “Continue”.
6. Select the appropriate app from the drop-down menu for which the push certificate is to be created. The identifier contains de.polario.<customerId>
7. Upload the previously downloaded CSR file here and click "Continue".
8. Click on the “Download” button and download the certificate from Apple.
9. Switch back to the CMS and upload the certificate from step 8 and click on “Save”.
