@startuml
user -> client : schedule 
client -> OrderAPIP1 : check book
OrderAPIP1 -> datacenterAPIP2 : check book
datacenterAPIP2 -> OrderAPIP1 : send ok
OrderAPIP1 -> datacenterAPIP2 : generate draft book
OrderAPIP1 -> client : send ok 
client -> OrderAPIP1 : send scheduler
OrderAPIP1 -> OrderAPIP1 : draft executions
OrderAPIP1 -> OrderAPIP1 : draft order
OrderAPIP1 -> client : send drafted order
client -> user : 
user -> client : select pricing profile
client -> OrderAPIP1 : update order 
OrderAPIP1 -> datacenterAPIP2 : check book
datacenterAPIP2 -> OrderAPIP1 : send ok
OrderAPIP1 -> datacenterAPIP2 : generate draft book
OrderAPIP1 -> client : send order
user -> client : order
client -> OrderAPIP1 : order 
OrderAPIP1 -> PaymentAPIBCP1 : send payment
PaymentAPIBCP1 -> OrderAPIP1 : send ok 
OrderAPIP1 -> datacenterAPIP2 : undraft booking
OrderAPIP1 -> OrderAPIP1 : undraft execution
OrderAPIP1 -> OrderAPIP1 : undraft order
OrderAPIP1 -> client : send ok 
client -> client : redirect
@enduml