<PackageReference Include="Relativity.Server.Import.SDK" Version="2.9.2" />

ErrorFileKey

public sealed class ErrorFileKey
Represents a server-side object that provides keys to download error files. This class cannot be inherited, backwards compatibility isn't guaranteed, and should never be consumed by API users.
using System; namespace Relativity.DataExchange.Service { [Serializable] public sealed class ErrorFileKey { public string LogKey { get; set; } public string OpticonKey { get; set; } } }