title: Bot framework load testing fails with a 400 error
body: <p>I'm trying to follow the instructions set out in the <a href="https://blog.botframework.com/2017/06/19/load-testing-a-bot/" rel="nofollow noreferrer">bot framework documentation</a> for load testing</p>
  
  <p>First, i send my details to azure auth and get myself a token. I then include this token on my message to the bot service in the below way</p>
  
  <pre><code>{
      "type": "message",
      "id": "sdcsdcsd928323",
      "channelId": "emulator",
      "conversation": {
      "id": "5eak34ff2m25"
    },
    "serviceUrl": "https://xxx-bot-xxx.azurewebsites.net",
      "text": "I am feeling angry",
    "from": {
      "id": "default-user",
      "name": "User"
    },
      "recipient": {
      "id": "dack329f3nfb",
      "name": "Bot"
    }
  }
  </code></pre>
  
  <p>While i'm getting a 202 Accepted response on the client. my backend logs show the below error:</p>
  
  <pre><code>Error: Failed to perform the requested operation on Azure Table. Message: The property value exceeds the maximum allowed size (64KB). If the property value is a string, it is UTF-16 encoded and the maximum number of characters should be 32K or less.
  RequestId:79e296f0-3002-0039-37e5-390397000000
  </code></pre>
  
  <p>i guess the bot is trying to save its state in azure table but some value is too large. Any thoughts on where i might be going wrong?</p>
  
  <p>I get a subsequent error message as well: Guessing its correlated</p>
  
  <pre><code>Error: Request to 'https://xxxx-xxx-xxxx.azurewebsites.net/v3/conversations/5eak34ff2m25/activities/sdcsdcsd928323' failed: [404] Not Found
  </code></pre>