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Monday, September 8, 2008

When checking in an item in a custom list, I was being presented with the following error:

Value does not fall within the expected range.  at Microsoft. SharePoint. SPFieldCollection. GetFieldByInternalName(String strName, Boolean bThrowException) at Microsoft. SharePoint. SPFieldCollection. GetFieldByInternalName(String strName) at Microsoft. SharePoint. SPListItem.get_MissingRequiredFields() at Microsoft. SharePoint. ApplicationPages. Checkin. OnLoad(EventArgs e) at System. Web. UI.Control. LoadRecursive() at System. Web. UI.Page. ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

After much head-scratching and nightmarish debugging, I found that the answer was very simple: Do not have the "Required" attribute set to true in your content type definition, but rather specify this in your custom list schema.