Hello Everyone. I am trying to map a OneToMany object relationship against a prhttps://community.appian.com/discussions/f/general/163/hello-everyone-i-am-trying-to-map-a-onetomany-object-relationship-against-a-prHello Everyone. I am trying to map a OneToMany object relationship against a pre-existing schema however Hibernate is complaining that is can&#39;t find an *IDX column to sort the objects on the &#39;many&#39; side of this relationship. I already have a column foren-USTelligent Community 12RE: Hello Everyone. I am trying to map a OneToMany object relationship against a prhttps://community.appian.com/thread/370?ContentTypeID=1Tue, 12 Jun 2012 21:10:19 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:871c41dc-f5f0-4fa3-b552-919560a93ebbEduardo FuentesHere&#39;s an example, it&#39;s for ManyToMany but still should be useful for your use case: <a href="https://forum.appian.com/suite/doc/50641">forum.appian.com/.../50641</a><br /><br />The model is called ManyToMany Example under Process Models - Cases. When importing the app you will get an error because my Data Store is named differently from yours just map it to your existing data source, publish it and test the example.<div style="clear:both;"></div>RE: Hello Everyone. I am trying to map a OneToMany object relationship against a prhttps://community.appian.com/thread/369?ContentTypeID=1Tue, 12 Jun 2012 21:07:16 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:ad285119-c90a-409e-ae3f-bbcbe53ec3a6Eduardo FuentesYou can use @ListIndexColumn(name=&quot;my_index_column_name&quot;).<div style="clear:both;"></div>