EBS Business events adapter catalog is not showing in the wizard for some modules

Summary

when trying to choose business event in procurement module , catalog doesn't show any business event in the list

Content

I'm using EBS adapter to subscribe to on-premise EBS system business events ,
I've been able to subscribe to Business events in Human resource module ,  how ever when trying to subscribe to business events in procurement (Purchase order ) the Business event list is not shown at all