API Reference > presentation-backend > Core > PresentationManagerProps > enableSchemasPreload enableSchemasPreload enableSchemasPreload: undefined | boolean Should schemas preloading be enabled. If true, presentation manager listens for BriefcaseDb.onOpened event and force pre-loads all ECSchemas. Defined in presentation/backend/src/presentation-backend/PresentationManager.ts Line 212 Last Updated: 29 November, 2022