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/11408.aspxTue, 03 Apr 2007 09:11:17 GMT033a2e2d-04e2-4a9d-be01-a4634161eefd:11408nukkumatti0https://www.infopathdev.com:443/forums/thread/11408.aspxhttps://www.infopathdev.com:443/forums/commentrss.aspx?SectionID=41&PostID=11408Yes this is possible. Usually you have a default value set to your drop down list, like Select... or it is just blank.<br /><br />Now select properties from your ddl and then select data validation. click add and then select from the first dropdown your ddl (e.g. field1) and in the second is blank (depending on what your default of the ddl is). You can also then use some screentips which will appear when the user trys to submit the form without a selection.<br /><br />Hope this helps.https://www.infopathdev.com:443/forums/thread/6166.aspxTue, 03 Apr 2007 08:20:29 GMT033a2e2d-04e2-4a9d-be01-a4634161eefd:6166markperry0https://www.infopathdev.com:443/forums/thread/6166.aspxhttps://www.infopathdev.com:443/forums/commentrss.aspx?SectionID=41&PostID=6166Is there a way to force a user to select an option in a combo box in an InfoPath 2003 form? If I right click on the box and select Properties the 'Cannot be Blank' check box is greyed out.