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/66665.aspxThu, 19 May 2011 04:37:02 GMT033a2e2d-04e2-4a9d-be01-a4634161eefd:66665exemplaris0https://www.infopathdev.com:443/forums/thread/66665.aspxhttps://www.infopathdev.com:443/forums/commentrss.aspx?SectionID=41&PostID=66665I had entered some new fields into my form and when looking at the Data Source I noticed that they were not necessarily in the correct group. I "moved" them in the Data Source and verified that the binding was okay. I clicked on "Preview" and it would not open. I don't know if the error was the same as the one below but the form locked up and I had to close InfoPath. When I try to reopen the form either by "Open" or "Design" I get the following error: Form template: C:\Documents and Settings\jon.oesterheld.us\My Documents\02_Form Design\ETI Automation Form v14 build.xsn The form definition (.xsf) file cannot be opened because of an error. The file cannot be validated by the XML Schema. The keyref 'groupMTTableMovement_28908' does not resolve to a key for the Identity Constraint '{http://schemas.microsoft.com/office/infopath/2003/solutionDefinition}xmlToEdit_name_key'. Line 12607, Position 5 ----^ What I would like to know is this fixable? If so how? I'm using InfoPath 2003 and Windows XP. Thank you in advance.