title: Limitation in the number of posts to fetch with Blogger API (error 400)
body: <p>I am trying to fetch all the post from a blog using the Blogger API. The maximum number of posts to fetch seems to be limited to 20 for some unknown reasons.</p>
  
  <p>If I try this URL:</p>
  
  <p><a href="https://www.googleapis.com/blogger/v3/blogs/3089072491354463482/posts?maxResults=20&amp;fields=items%28title%29&amp;key=AIzaSyAJO5J-pRCaGOIeRLIJfvAPwxpMLKvwebU" rel="nofollow">https://www.googleapis.com/blogger/v3/blogs/3089072491354463482/posts?maxResults=20&amp;fields=items(title)&amp;key=AIzaSyAJO5J-pRCaGOIeRLIJfvAPwxpMLKvwebU</a></p>
  
  <p>I get the following response (listing the last 20 post titles as expected):</p>
  
  <pre><code>{
  "items": [
    {
     "title": "El Caballero"
    },
    {
     "title": "Une traversée de frontière… étonnante!"
    },
    {
     "title": "Hasta luego querida Argentina!"
    },
    {
     "title": "Dernier jour en Argentine"
    },
    {
     "title": "Humahuaca"
    },
    {
     "title": "Purmamarca"
    },
    {
     "title": "Tilcara"
    },
    {
     "title": "Premières grèves"
    },
    {
     "title": "Le Nord Argentin: Salta"
    },
    {
     "title": "Ca en fait de l'eau tout ça..."
    },
    {
     "title": "Un peu de pluie au Brésil"
    },
    {
     "title": "Iguazu"
    },
    {
     "title": "San José"
    },
    {
     "title": "Adieu à Buenos Aires"
    },
    {
     "title": "Traversons en Uruguay"
    },
    {
     "title": "Retour à Buenos Aires"
    },
    {
     "title": "Fin de l'aventure Patagonienne"
    },
    {
     "title": "Les fameuses tours nous surprennent"
    },
    {
     "title": "Un peu de pluie pour se changer les idées"
    },
    {
     "title": "Valle Francés"
    }
   ]
  }
  </code></pre>
  
  <p>However, if I increase the maxResults parameters, </p>
  
  <p><a href="https://www.googleapis.com/blogger/v3/blogs/3089072491354463482/posts?maxResults=21&amp;fields=items%28title%29&amp;key=AIzaSyAJO5J-pRCaGOIeRLIJfvAPwxpMLKvwebU" rel="nofollow">https://www.googleapis.com/blogger/v3/blogs/3089072491354463482/posts?maxResults=21&amp;fields=items(title)&amp;key=AIzaSyAJO5J-pRCaGOIeRLIJfvAPwxpMLKvwebU</a></p>
  
  <p>I get the following error:</p>
  
  <pre><code>{
   "error": {
    "errors": [
     {
      "domain": "global",
      "reason": "invalid",
      "message": "Invalid Value"
     }
    ],
    "code": 400,
    "message": "Invalid Value"
   }
  }
  </code></pre>
  
  <p>How could I increase the limitation in the maximum number of post that I can fetch?</p>
  
  <p>Thanks,</p>
  
  <p>Nicolas</p>