curl --request DELETE \
  --url https://{region}.affinda.com/v3/mapping_data_sources/{identifier}/values/{value} \
  --header 'Authorization: Bearer <token>'

import requests

url = "https://{region}.affinda.com/v3/mapping_data_sources/{identifier}/values/{value}"

headers = {"Authorization": "Bearer <token>"}

response = requests.delete(url, headers=headers)

print(response.text)

const options = {method: 'DELETE', headers: {Authorization: 'Bearer <token>'}};

fetch('https://{region}.affinda.com/v3/mapping_data_sources/{identifier}/values/{value}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "type": "validation_error",
  "errors": [
    {
      "attr": "non_field_errors",
      "code": "unique",
      "detail": "This index name has already been used"
    }
  ]
}

{
  "type": "validation_error",
  "errors": [
    {
      "attr": "non_field_errors",
      "code": "unique",
      "detail": "This index name has already been used"
    }
  ]
}

{
  "type": "validation_error",
  "errors": [
    {
      "attr": "non_field_errors",
      "code": "unique",
      "detail": "This index name has already been used"
    }
  ]
}