# 400-Bad request

**URL:** <https://discuss.elastic.co/t/400-bad-request/381344>\
**Category:** Elasticsearch\
**Tags:** docker, vector-search\
**Created:** [August 26, 2025, 10:29am UTC](https://discuss.elastic.co/t/400-bad-request/381344 "2025-08-26T10:29:27Z")\
**Posts on this page:** 1\
**Showing post:** 2

<div class="post-metadata">

**Author:** ![Tortoise](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/tortoise/32/147587_2.png) [@Tortoise](https://discuss.elastic.co/u/Tortoise)\
**Post date:** [August 27, 2025, 3:24am UTC](https://discuss.elastic.co/t/400-bad-request/381344/2 "2025-08-27T03:24:08Z")

</div>

> [@tarun-ghcp](#):
>
> "must\_not": [{"term": {"type.keyword": {"value": "Image"}}}]

Hello @tarun-ghcp

Welcome to the Community!!

Could you please check once below line :

```auto
"must_not": [{"term": {"type.keyword": {"value": "Image"}}}]

```

I am not sure if we need to use value in the query as per the documentation

> **[kNN search | Elastic Docs](https://www.elastic.co/docs/solutions/search/vector/knn)**
>
> A k-nearest neighbor (kNN) search finds the k nearest vectors to a query vector, as measured by a similarity metric. Common use cases for kNN include:...

```auto
 "bool": {
            "must_not": [
              { "term": { "type.keyword": "Image" } }
            ]
          }

```

Thanks!!

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