title: Errors in the OLAP storage engine: A duplicate attribute key has been found when processing: Table
body: <p>I have gone through so many articles on this but was not able to find the exact solution. </p>
  
  <p>First I swapped all NULL with ISNULL and again after that I'm getting same error: </p>
  
  <blockquote>
    <p>Errors in the OLAP storage engine: A duplicate attribute key has been found when processing: Table: 'dbo_LoyaltyProfileMaster', Column: 'ReferreCode', Value: 'EST000001'. The attribute is 'Referre Code'.</p>
  </blockquote>
  
  <p>If I delete this particular data then its runs fine. </p>
  
  <p><strong>But as per my requirement I can get duplicates in this column</strong>. </p>
  
  <p>As this is not a primary key, I thought it should run fine. </p>
  
  <p>Please let me know if you want to see the SQL Code for this.</p>