title: (messageTooBig) how to delete messages on server gcm ?
body: <p>my application work with GCM, all success to send and receive messages, but one time I get an error </p>
  
  <pre><code>{"multicast_id":9067671989076188106,"success":0,"failure":1,"canonical_ids":0,"results":[{"error":"MessageTooBig"}]} 
  </code></pre>
  
  <p>from the doc that I read said that the payload exceeds the maximum limit, my question.</p>
  
  <p>1 how do we know the payload reaches the maximum limit?</p>
  
  <p>2 how to solve the problems? do I have to delete messages on the server first? or is there another way?</p>
  
  <p>*I am using php as a server to set the GCM</p>
  
  <p>need help, thanks</p>