https://community.appian.com/discussions/f/user-interface/13187/count-frequency-of-data-combination-at-column-level-in-datasetHi , Want to count same combination of two data column in dataset. Test Dataset - Column 1 Column 2 Column 3 Row 1 - A B C Row 2- A B D Row 3 - C B E Row 4- C A F Row 5- C G H Here i want to put one validation that combination ofen-USTelligent Community 12https://community.appian.com/thread/59561?ContentTypeID=1Sat, 25 Aug 2018 16:43:41 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:0d83f475-ea6a-4ad5-8d99-22e9189d54f0ankita0004You have to apply this on both fields<br /> <br /> <br /> if(or(rule!APN_isBlank(ri!Data[ri!index].sgId),rule!APN_isBlank(ri!Data[ri!index].mtId)),{},<br /> count(<br /> whereContains(<br /> ri!Data[ri!index].sgId,<br /> local!scData.sgId<br /> )<br /> ) &gt; 1,<br /> count(<br /> whereContains(<br /> ri!Data[ri!index].mtId,<br /> index(index(ri!Data,whereContains(<br /> ri!Data[ri!index].sgId,<br /> local!scData.sgId<br /> )),<br /> &quot;mtId&quot;,<br /> {}<br /> )<br /> )<br /> )&gt;1,<br /> &quot;Duplicate Combination &quot;,<br /> {}<br /> )<div style="clear:both;"></div>https://community.appian.com/thread/59548?ContentTypeID=1Fri, 24 Aug 2018 15:53:25 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:abc7bf24-2562-46b5-822c-33dd676dd883chandhinirPlease find the link :<a href="https://community.appian.com/discussions/f/user-interface/13143/how-to-count-frequency-of-data-in-dataset">community.appian.com/.../how-to-count-frequency-of-data-in-dataset</a><div style="clear:both;"></div>