Palantir Common Errors Overview Quick reference for the top 10 most common Foundry API and transform errors with copy-paste solutions. Prerequisites - installed - API credentials configured - Access to Foundry build logs or application logs Instructions Error 1: 401 Unauthorized — Invalid or Expired Token Fix: Error 2: 403 Forbidden — Insufficient Scopes Fix: Add missing scopes in Developer Console Your App Scopes. Common scopes: - — read datasets - — write datasets - — read Ontology objects - — apply actions Error 3: ObjectTypeNotFound Fix: Object type names are API names, not display names.…