Cannot delete service instance for a productive cluster

From SAP BTP cockpit, we had created a service instance for "Apache Kafka" in one of our dev space. When we try to delete the service instance from the cockpit, the status returns to "Deletion Failed". When we click the status we get a popup with message "Service instance kafka1: Service broker error: Service broker kafka failed with: Cannot delete service instance for a productive cluster".

How to resolve this issue?