One session abroad, fully understood
The driver has arrived. Two charging stops in Austria, one card, no registration anywhere.
The invoice will come from the German provider at the end of the month.
The questionCan you explain how the card worked, and how the money will find its way?
The afternoon in seven moments
The app shows the site, its status and price: Locations and Tariffs from the operator.
Stop 03A German card at an Austrian charger: provider and operator connected through .
Stop 01A direct link to twelve partners, a hub for hundreds more.
Stop 02Tap, accepted from the cached list: ALLOWED.
Stop 0441 kWh and 12 minutes of parking: the operator's tariff, the provider's price.
Stop 05The , pushed to the provider; corrected later with a .
Stop 06A charger shown as free, but taken: status delays between systems.
Stop 07
Seven moments, two companies that never met. is how they work together.
Where to go from here
Plug & Charge shows a session without any card, Payments and billing follows the money in detail, and OCPP in depth the messages inside the operator's network. See all learning paths.
Check your understanding
4 questions. Answer all of them to complete this stop. Each answer explains itself.
How did the provider's app know the Austrian site before the driver arrived?
Site, status and price are exchanged continuously, before any session.
Why was the card accepted within two seconds?
With whitelist type ALLOWED, the operator may accept the cached token without asking.
The operator's tariff gave 25.39 EUR, the invoice 25.01 EUR. Why?
The operator's tariff applies between the companies; the driver pays under the provider's contract.
What happened when the parking fee had been counted twice?
CDRs are not deleted; a credit CDR cancels the wrong one and a new CDR replaces it.
- OCPI Open Charge Point Interface: an open protocol for roaming between operators and e-mobility service providers. EV charging fundamentals, stop 03 Glossary
- Roaming Charging in another company's network with your own card or app. EV charging fundamentals, stop 03 Glossary
- CDR Charge detail record: the digital receipt of a session, with energy, duration and tariff. EV charging fundamentals, stop 05 Glossary
- Whitelist type OCPI's rule per token for cached or real-time authorisation: ALWAYS, ALLOWED, ALLOWED_OFFLINE or NEVER. Stop 04 Glossary
- Credit CDR A record that cancels a CDR already sent; OCPI does not allow CDRs to be deleted, so corrections run through credit CDRs. Stop 06 Glossary