When trying to create a RabbitMQ on-demand service, it fails with the following error:
Service broker error: global instance limit exceeded for service ID: 4B1402E1-0781-4959-99D0-A9E4995BF0F7. Total instances: xx
When checking the tile in Ops Manager, the quota for the plans may be higher or lower than total specified in the error. When you try to raise the plan instance quota, it fails with the same error.