@startuml
actor "Content Provider" as CS
participant "Document Administrator" as DS
participant "Document Repository" as DR
participant "Document Registry" as DReg

CS -> DS: Trigger to replace existing document
DS -> DS: Prepare updated document and metadata
DS -> DR: Send update request (ITI-57)
DR -> DR: Process request
DR -> DReg: Send update request with metadata (ITI-57)
DReg -> DReg: Validate metadata
DReg -> DReg: Create new set of metadata 
DReg -> DReg: Update availabilityStatus for existing document
DReg -> DR: Return successful response (ITI-57)
DR -> DR: Replace documents
DR -> DS: Return successful response (ITI-57)
@enduml