APN Certificate Guide
Setup APN Certificates for Push Notifications
In the background, OpenBack may use silent Push Notifications to silently update messages and monitor some timed messages precisely. As such, OpenBack requires a certificate to send those push notification packets. In the project, a certificate must be created and provided to OpenBack (send to the OpenBack integrations team or upload to the Message Campaign Manager in your App settings if available on in the OpenBack account). If Push Notifications are used already, OpenBack recommends creating a specific certificate for the OpenBack SDK. iOS applications can have multiple APNs certificates and this additional OpenBack certificate does not interfere with any existing certificates or services in any way.
Go to your apple developer account
Select Certificates, Identifiers and Profiles
Add a certificate for your application
Select the Apple Push Notification service SSL (Sandbox & Production)
Pick the application for the Apple Push Notification service
Follow the steps to create the certificate.