How can i find document where the value of a field It is not repeated

[Alejandro_Chaves]

Hello, im new in ELK and dont know how to find only the documents where the value of serviceName It is not repeated, just show me the document with the serviceName SLA_D_CARGA_MODELO_ACTIVO_SSII_testemail with the devtools in kibana. I do not want to find it by looking for it by name, but because it does not repeat itself. Sorry for my language, im not very good in english.

[Nathan_Reese]

Trying running a rare-terms aggregation in console.

Below is an example from the documenation.

GET /_search
{
  "aggs": {
    "genres": {
      "rare_terms": {
        "field": "genre",
        "max_doc_count": 1
      }
    }
  }
}

[Alejandro_Chaves]

Okay, it worked. Thank you so much.