curl --request PATCH \
  --url https://api.zenskar.com/invoices/{invoice_id}/void \
  --header 'organisation: <api-key>' \
  --header 'x-api-key: <api-key>'

{
  "detail": [
    {
      "loc": [
        "<string>"
      ],
      "msg": "<string>",
      "type": "<string>"
    }
  ]
}