The number of topics that you can create in a Message Queue for Apache Kafka instance of Professional Edition is twice the number of topics that you specified when you purchased the instance.

The quota on topics for a Message Queue for Apache Kafka instance of Professional Edition is calculated by using the following formula: Topic quota = Number of topics specified in the order × 2. For example, if you purchase an instance of Professional Edition that has 50 topics, the number of topics that you can create in the instance is 100.