You can make vRealize Automation Cloud Assembly blueprints available in the vRealize Automation Service Broker catalog by adding a vRealize Automation Cloud Assembly content source and sharing the blueprints.

Configuration Workflow = http://virtualization24x7.blogspot.com/2020/02/vmware-vrealize-automation-8-service.html
Part – 1 =  http://virtualization24x7.blogspot.com/2020/02/vmware-vrealize-automation-8-service_11.html
Part -2 = http://virtualization24x7.blogspot.com/2020/02/vmware-vrealize-automation-8-service_7.html

Configure Content Sharing in Service Broker

1. Login to vRA = https://vRAFQDNorIP

2.  Content and Policies Tab > Content Sharing > Select Project >  Add > Select Content Source > Save