Hi Friends, >From past 1days I m facing this problem and i have tried lot many combinations to solve it. I have two aj4:outpanel in first panel I show exchange table with <t:dataScroller associated to it. When I click on the navigation links of the <t:dataScroller i.e next , last, previous, or even the page no i get following error. Duplicate component ID 'exchangeGrp:frmEx:aclistscrollleridx1' found in view. I have assigned id to each and every tag. Pls let me know how to solve this problem. One more thing when I move out this <t:dataScroller from the aj4:outpanel the nevigations works fine. Waiting for ur kind replies. I have attched file pls have o look. http://www.nabble.com/file/p13388817/ExchangeAdd.jsp ExchangeAdd.jsp thanks Novin -- View this message in context: http://www.nabble.com/%3Ct%3AdataScroller-and-Duplicate-component-ID-tf4685223.html#a13388817 Sent from the MyFaces - Users mailing list archive at Nabble.com.