# Icu\_normalizer is not working

**URL:** <https://discuss.elastic.co/t/icu-normalizer-is-not-working/364858>\
**Category:** Elasticsearch\
**Created:** [August 13, 2024, 7:26pm UTC](https://discuss.elastic.co/t/icu-normalizer-is-not-working/364858 "2024-08-13T19:26:10Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Aliaksandr\_Khramtsov](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/aliaksandr_khramtsov/32/136761_2.png) [@Aliaksandr\_Khramtsov](https://discuss.elastic.co/u/Aliaksandr_Khramtsov)\
**Post date:** [August 13, 2024, 7:26pm UTC](https://discuss.elastic.co/t/icu-normalizer-is-not-working/364858/1 "2024-08-13T19:26:10Z")

</div>

GET /\_cat/plugins?v=true&s=component&h=name,component,version,description  
name component version description  
es01 analysis-icu 8.12.2 The ICU Analysis plugin integrates the Lucene ICU module into Elasticsearch, adding ICU-related analysis components.  
es01 analysis-phonetic 8.12.2 The Phonetic Analysis plugin integrates phonetic token filter analysis with elasticsearch.  
**next step**  
PUT /index

```auto
{
  "settings": {
    "index": {
      "analysis": {
        "analyzer": {
          "nfkc_cf_normalized": { 
            "tokenizer": "icu_tokenizer",
            "char_filter": [
              "icu_normalizer"
            ]
          },
          "nfd_normalized": { 
            "tokenizer": "icu_tokenizer",
            "char_filter": [
              "nfd_normalizer"
            ]
          }
        },
        "char_filter": {
          "nfd_normalizer": {
            "type": "icu_normalizer",
            "name": "nfc",
            "mode": "decompose"
          }
        }
      }
    }
  }
}

```

I get an error

```auto
{
  "error": {
    "root_cause": [
      {
        "type": "illegal_argument_exception",
        "reason": "Unknown char_filter type [icu_normalizer] for [nfd_normalizer]"
      }
    ],
    "type": "illegal_argument_exception",
    "reason": "Unknown char_filter type [icu_normalizer] for [nfd_normalizer]"
  },
  "status": 400
}

```

Please help