In a Multi-Org scenario in Marketing Cloud when 'All contacts' and 'All subscribers' are shared between all the BUs, is it possible that different contacts from different Orgs have the same ContactID? If yes, what could happen?
I am not really sure how this ID is generated.
As far as I read, the IDs are autogenerated for each Org so, that case of having the same ID in different Org could happen. Am I right?