Required enumeration - using [form.maybenull] an empty option appears so that user must select, [ic.noselection.nolabel] makes the label empty Required [element], Single Occurrence, with Simple Type [inline-Form-Required] localName is [Required] without namespace Required enumeration - using [form.maybenull] an empty option appears so that user must select, [ic.noselection.nolabel] makes the label empty