It introduces the API:

• Person.requestSupport(..): Person request Support Request (from Person)
• Person.notify(..): Creates a Support Request to notify the Person (from System)
• SupportRequest.approveRegistration()
• SupportRequest.requestEvent(..)
• SupportRequest.notify(..)
• UpgradeDecision.approveRegistration()
• UpgradeDecision.reviewRegistration()
• UpgradeDecision.requestUpgrade(..)
• UpgradeDecision.reviewUpgrade(..)
• UpgradeDecision.notify(..)

CRM is exclusively the part of Support Request and for PDM is only for UpgradeDecision part

Notify and Request Event can be seen as equal but they have a core difference, the direction (from or to person), it implies a series of settings around a newContent that are quite different.

This API encapsulate the essential part of Support Request and Upgrade Decision engine only, since the goal isn't encapsulate all for now.

/cc @romain