OptionaldetailsParsed SharePoint error body, when the response carried one.
OptionalretryHow long the server asked clients to wait before retrying, from a
Retry-After header (429/503). The retry logic honours it.
OptionalstatusHTTP status code, for HTTP and AUTH failures.
Failed action result.
erroris a human-readable message prefixed with the action name, for logging.codeclassifies the failure;statusanddetailsare present forHTTP/AUTHfailures when SharePoint supplied them.