https://www.infopathdev.com:443/forums/41.aspxIf you're not sure where to ask your question, ask it here. If necessary, our moderators will make sure it gets classified in the correct board.enCommunityServer 2007 SP3 (Build: 31118.962)https://www.infopathdev.com:443/forums/thread/98457.aspxThu, 24 Jul 2014 18:30:02 GMT033a2e2d-04e2-4a9d-be01-a4634161eefd:98457Firthouse0https://www.infopathdev.com:443/forums/thread/98457.aspxhttps://www.infopathdev.com:443/forums/commentrss.aspx?SectionID=41&PostID=98457<p>Hi, I have three dropdown listboxes and a multi select list box. When user selects values in all the DDLB and MSLB, the values are inserted into repeating table. I want to validate for duplicate entries in the repeating table.</p><p>Here&#39;s how my repeating table looks like:</p><p>Row 1 -- &gt;&nbsp;<strong>Cluster1 | Pathway1 | Program1 | </strong>Course1, <strong>Course2</strong>,Course3</p><p>Row 2 --&gt;&nbsp;Cluster1 | Pathway2 | Program2 | Course2, Course4</p><p>Row 3 --&gt; <strong>Cluster1 | Pathway1 | Program1 | Course2</strong></p><p>&nbsp;I am able to validate for duplicate values as a full string using concat function and preceding:sibling function.&nbsp;But I want to able to validate for every course selected with combination of cluster,pathway,program. In this case, Row1 has Course2 with cluster1,pathway1,program1 and it should validate when Row 3 is entered with same Course2 with cluster1,pathway1 and program1.</p><p>Please can anyone help me with&nbsp;this&nbsp;issue!!!&nbsp;</p>