Sending a POST request to create a new SEO Report will yield one of two different objects:

• If the request will CREATE a new SEO Report, or will REFRESH an existent SEO Report, it returns a 202 Accepted status code and creates a new "SEO Report Request" (returned in the body payload and in the Content-Location header). You are required to poll the endpoint returned in the Content-Location header regularly until the Report is created.
  (See "Get SEO Report Request Status")
• If the request is for a cached domain and will not create a new SEO Report request, it returns a 201 Created response with the SEO Report as payload.