title Remove E2T Instance flow
participant E2tShutdownManager as E2M
participant E2tAssociationManager as RAM
participant E2TInstancesManager as E2TM
participant RoutingManagerClient as RMC
participant rNib DB as RNIB

E2M->+RAM: RemoveE2Instance(e2tInstance)
RAM->+RMC: DELETE /handles/v1/e2t
alt error
RMC->RAM: 4xx/5xx/TO
note over RAM: log error as warning, proceed
else success/error
RMC->-RAM: 201
RAM->+E2TM: RemoveE2TInstance(e2tAddress)
note over E2TM: Lock (atomic operation)
E2TM->+RNIB: RemoveE2TInstance(e2tAddress)
RNIB-->-E2TM: ok
E2TM->+RNIB: GetE2TAddresses
RNIB->-E2TM: addresses
E2TM->E2TM: delete address from e2t address list
E2TM->+RNIB: SaveE2TAddresses
RNIB-->-E2TM: ok
note over E2TM: Unlock
E2TM-->-RAM: ok
RAM-->-E2M: ok