title: EMC Documentum DQL - How to delete repeating attribute
body: <p>I have a few objects created on my database and I need to delete some of the repeating attributes related to them.
  The query I'm trying to run is:</p>
  
  <pre><code>UPDATE gemp1_product objects REMOVE ingredients[1] WHERE (r_object_id = '08015abd8002cd68')
  </code></pre>
  
  <p>But all I get is the folloing error message:</p>
  
  <blockquote>
    <p>Error querying databse.
    [DM_QUERY_E_UPDATE_INDEX]error: "UPDATE: Unable to REMOVE tghe attribute ingredients at index 1."
    [DM_OBJECT_W_DELETE_ATTR_POSITION_ERROR]warning: "attempt to delete
    non-existent attribute 88"</p>
  </blockquote>
  
  <p>Object <em>08015abd8002cd68</em> exists and I can see it on the database. Queries like SELECT and DELETE work fine but I do not want to delete the whole object.</p>