The Travel Agency: Sub-Processes, Call Activities & Data in BPMN

You Deserve a Holiday After mastering events, gateways, and parallel work, you've earned a break. So let's take a trip to Paradise Island - white sand, turquoise water, zero exclusive gateways. There's just one problem. You applied for your visa four weeks ago, and it still hasn't arrived. Your luggage is packed. Your flight is booked. But the embassy? Radio silence. You pick up the phone and call. Turns out the Embassy of Paradise Island is famously old-fashioned - every process is paper-based, nothing is digitalized. The officer apologizes and walks you through what's been happening behind the scenes. As you listen, you sketch the process in BPMN. Suddenly you can see exactly where your application is stuck - and why it takes so long. ## The Documents The visa process starts the moment you send your documents to the embassy. From a BPMN perspective, that's a message start event - something arrives from outside. But this time, we want to make the documents themselves visible in the di