vRO 7 ipam integration workflow error

All the necessary prereq has been done on vRO 7 , vRA 7 , IPAM side  plugin 3.2.1..when kicking off a blueprint with proper property group

Workflow "create vm in range" errors out with vCAC entity error .."at lest one entity should be created for selection...dynamic script model name : validate vcacinput#5"

Any idea how to trouble shoot this ? or see what is causing this error

Appreciate inputs ...newbie here!

Thanks