public abstract class Field
    {
        public Field(int id, string name)
        {
            ID = id;
            Name = name;
        }

        public int ID { get; private set; }
        public string Name { get; private set; }
    }

    internal class MetaField : Field
    {
        public MetaField(int id, string name) : base(id, name)
        {
        }

        // other stuff
    }

    public class IndexField : Field
    {
        public IndexField(int id, string name) : base(id, name)
        {
        }

        // other stuff
    }

    public class BatchField : Field
    {
        public BatchField(int id, string name) : base(id, name)
        {
        }

        // other stuff
    }

    public enum AllocationFieldType
    {
        None,
        IndexField,
        BatchField,
        KofaxValue
    }

    internal class ReleaseSetupData
    {
        public ReleaseSetupData(IndexField[] indexFields, BatchField[] batchFields)
        {
            IndexFields = indexFields;
            BatchFields = batchFields;
        }

        public IndexField[] IndexFields { get; private set; }
        public BatchField[] BatchFields { get; private set; }
    }