curl --request POST \
  --url https://api.maalbar.dk/v1/screenings/{screeningPublicId}/materials \
  --header 'Content-Type: application/json' \
  --header 'X-Api-Key: <api-key>' \
  --data '
{
  "publicId": "item_xxxxxxxxxxxx",
  "label": "<string>",
  "functionalUnitValue": 0,
  "designedForDisassembly": false,
  "productionWaste": 0,
  "fields": [
    {
      "publicId": {},
      "locationPublicId": {},
      "additional": {
        "proportion": 123,
        "recycleShare": 123,
        "materialUnits": {
          "DTex": 123
        }
      }
    }
  ]
}
'

const url = 'https://api.maalbar.dk/v1/screenings/{screeningPublicId}/materials';
const options = {
  method: 'POST',
  headers: {'X-Api-Key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    publicId: 'item_xxxxxxxxxxxx',
    label: '<string>',
    functionalUnitValue: 0,
    designedForDisassembly: false,
    productionWaste: 0,
    fields: [
      {
        publicId: {},
        locationPublicId: {},
        additional: {proportion: 123, recycleShare: 123, materialUnits: {DTex: 123}}
      }
    ]
  })
};

fetch(url, options)
  .then(res => res.json())
  .then(json => console.log(json))
  .catch(err => console.error(err));

{
  "error": "Invalid request parameters"
}

{
  "error": "Authentication required"
}

{
  "error": "Resource not found"
}

{
  "error": "An unexpected error occurred"
}