AccessDenied defines the error if the caller doesn't have permission to perform the action.

ActivityLimitReached defines the error if the app or user has been throttled.

GeneralException defines the error if an unspecified error has occurred.

InvalidAuthenticationToken defines the error if the access token is missing.

InvalidRange defines the error if the specified byte range is invalid or unavailable.

InvalidRequest defines the error if the request is malformed or incorrect.

ItemNotFound defines the error if the resource could not be found.

MalwareDetected defines the error if malware was detected in the requested resource.

NameAlreadyExists defines the error if the specified item name already exists.

NotAllowed defines the error if the action is not allowed by the system.

NotSupported defines the error if the request is not supported by the system.

PreconditionFailed the request cannot be made and this error response is sent back.

QuotaLimitReached the user has reached their quota limit.

ResourceModified defines the error if the resource being updated has changed since the caller last read it, usually an eTag mismatch.

ResyncRequired defines the error if the delta token is no longer valid, and the app must reset the sync state.

ServiceNotAvailable defines the error if the service is not available.

Unauthenticated the caller is not authenticated.

ErrorCode defines code as used in MS Graph - see https://docs.microsoft.com/en-us/graph/errors?context=graph%2Fapi%2F1.0&view=graph-rest-1.0.