Delivery service 'process' not triggered.

[snicto]

I have created custom delivery, service providers. They work fine, however, I need to pass some information to an external system once the order is placed. According to documentation the process function should take care of it. The issue is that it is never called, and I cannot figure out who is responsible for calling it, it seems it is ignored. Who is responsible for calling it and where could I find it?

[aimeos]

The delivery service providers are executed by the order/service/delivery job controller and you have to execute it regularly by a cronjob like described here:
https://aimeos.org/docs/latest/laravel/setup/#cronjobs