Windchill REST Services enables you to customize domains provided by PTC. You can also add new domains. For customizing existing domains and creating new domains, new configuration files must be created in the custom configuration path <Windchill>/codebase/rest/custom/domain. The configurations from the custom configuration path are merged with the customizations in the PTC configuration path <Windchill>/codebase/rest/ptc/domain.

The recommended practice when specifying an entity in the entity json file, is to specify a fully qualified name for the entity.