# Attribute based mapping ignores FieldIndexOption value

**URL:** <https://discuss.elastic.co/t/attribute-based-mapping-ignores-fieldindexoption-value/52573>\
**Category:** Elasticsearch\
**Created:** [June 13, 2016, 7:38am UTC](https://discuss.elastic.co/t/attribute-based-mapping-ignores-fieldindexoption-value/52573 "2016-06-13T07:38:04Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![rohitlodha](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/rohitlodha/32/10276_2.png) [@rohitlodha](https://discuss.elastic.co/u/rohitlodha)\
**Post date:** [June 13, 2016, 7:38am UTC](https://discuss.elastic.co/t/attribute-based-mapping-ignores-fieldindexoption-value/52573/1 "2016-06-13T07:38:04Z")

</div>

I have a class as follows

```cs
    [ElasticsearchType(Name = "foo", IdProperty = "Id")]
    public class Foo
    {
        [String(Index = FieldIndexOption.NotAnalyzed)]
        public Guid Id { get; set; }
    }

```

and on index, mapping is

````json
{
    "mappings": {
      "foo": {
        "properties": {
          "id": {
            "type": "string"
          }
        }
      }
    }
}
```
````

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 5, 2017, 10:44pm UTC](https://discuss.elastic.co/t/attribute-based-mapping-ignores-fieldindexoption-value/52573/2 "2017-07-05T22:44:25Z")

</div>