Hooks
The import software (both cmdline and HTTP-API) can be extended by customers through hooks. This individualization method is officially supported for the long-term and thus sustainable.
The modern Python-based PyHooks are saved in /usr/share/ucs-school-import/pyhooks/
. They are documented in Commandline import documentation chapter Hooks.
There is a collection of PyHooks in a dedicated git repository: components/ucsschool-hooks.
Sequence
The order in which (hook) code is executed during an import job: