The Universal Search Filter (also mentioned as USF) is the technical syntax to use in Dolibarr to define a filter. It is used by developers to:
- build rules to filter some combo list when the define an object dataset (into the property ->fields of an object)
- to provide filters to some functions and methods in Dolibarr
- to provide filters to some Ajax components.
- It is also used to add a filter on some requests on APIs.