http.post is not working

I'm trying to send a form to an API with the Angle link, but I'm not getting it:

Code:

save(auditoria):Observable <{}>{
    let headers = new Headers();
        headers.append('Content-Type', 'application/json');
    let options = new RequestOptions({ headers: headers });

    return this.http.post('${Utils.WEBSERVICE}/api/audit', auditoria, options).map( (res:Response) => res.json());
}

This is how it looks in the console

  

Request URL: link

     

Request Method: OPTIONS

     

Status Code: 404 Not Found

In my API there is nothing that receives the verb options, when I make the same send using POSTMAN everything happens normal, it just does not work for the application I'm building.