title: MongoDB - Quota exceeded error code: 12501
body: <p>I'm using MongoDB's Sandbox (Version: 3.2.12) database and deployment is on mLab. I have a strange issue while adding/inserting the records (From shell and also from the application).</p>
  
  <p>I have not set any quota limits to the database files.</p>
  
  <p>Error Message: </p>
  
  <p>"error message: quota exceeded error code: 12501”</p>
  
  <p>But i have sufficient memory in database and i can able to add/insert records in other collection apart from “xyz” collection.</p>
  
  <p>However, i have removed some records from "xyz" collection to free up memory and tried again to insert records. E.g. Removed 2 records in collection and after that only 2 records gets inserted.</p>
  
  <p>Can i add more files to my quota, if yes how?</p>
  
  <p>Is there any way to debug this? Or any other solution without dropping database?</p>