https://community.appian.com/discussions/f/general/1826/need-a-help-on-nested-cdt-s-i-have-a-nested-cdt-a--b--c-out-of-whicNeed a help on nested CDT&#39;s. I have a nested CDT (A-&gt;B-&gt;C) out of which B and C are multiple. When I have A, are there any out of the box function&#39;s that I can use to derive the list of C&#39;s? In the same scenario, is there any function that will allowen-USTelligent Community 12https://community.appian.com/thread/6496?ContentTypeID=1Thu, 02 Jan 2014 13:40:35 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:efb99e6a-4de2-48d3-a684-28d40cbc9c5fSathya SrinivasanMulti level nesting is not usually recommended. It complicates the design and tightly couples the schema making it less flexible to change. Is your underlying data stored in a datastore? If so, you should be able to create QR that fetches C based on a given A. Alternatively, you can use the looping function (apply) to fetch all B&#39;s and the corresponding C&#39;s within it.<div style="clear:both;"></div>