How can I prevent External Contact being deleted when they are already used somewhere else?
If you delete the Customer from a ServiceReq, you end up with an Exception message like this:
The Service Request no longer exists or the current user is not allowed to see the request or any of its parts.POST:http://servicedesk.simac.be/HEAT/ServiceCatalog/services/ServiceSubscription.asmx/GetRequestData
you can define this on relationship level:
This will basically add a constraint and prevent the deletion:
Retrieving data ...