backstage/.changeset/yellow-shirts-study.md

@backstage/catalog-model, @backstage/plugin-catalog-backend

@backstage/catalog-model	@backstage/plugin-catalog-backend
minor	minor

BREAKING: Removed the target property from EntityRelation. This field has been replaced by targetRef. This means that target: { name: 'team-a', kind: 'group', namespace: 'default' } is now replaced with targetRef: 'group:default/team-a' in entity relations.

The entities API endpoint still return the old target field for to ease transitions, however the future removal of this field will be considered non breaking.