we would like to send transactional messages related to our online shop via Campaign and will use the API to receive the information.
What happens to the transactional message if the Campaign server is unavailable? How can we make sure that Campaign receives the information to send a message again in case the server was not available?
While sending API Calls to Campaign Server, in case of unavailability of the Server, you would receive corresponding error messages.
In that case, you will have to resend API Calls.
If for some reason, the API message was received within Server but didn't turn out to be successful, then the Campaign (Real-Time) Server would continue to target end-user until the specified threshold of retries is achieved.