curl --request POST \
  --url https://api.xplenty.com/{account_id}/api/packages/{package_id}/validations \
  --header 'Accept: <accept>' \
  --header 'Authorization: Basic <encoded-value>'

{
  "id": 123,
  "status": "running",
  "errors": [
    {}
  ],
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z",
  "package_id": 123
}