New answers tagged spfield
There are at least 2 more things that you need to take into consideration when using calculated columns with content types: Each column referred to in the calculated column must also be a site column added to the content type - The point here is that you cannot do things like reference a list level column in a content type level column because once you ...
Two options avalable to retrieve custom fields Check if the field is a built-in field: SPBuiltInFieldId.Contains(field.Id) Check SPField.SourceId
This is issue with the browser HTML5 validation I believe. The way to get away is either ensuring to click save button without or before validation fires and other is to amend changes using SP designer.
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