Examples from "Form Optional / Required" section of the form reference: form.mustvalue - a schema-required field is *displayed* as optional when form.mustvalue=false, still the value must be present to validate Required [element], Single Occurrence, with Simple Type [inline-Form-FieldRequired] localName is [FieldRequired] without namespace Required [element], Single Occurrence, with Simple Type [inline-Form-FieldRequiredMustValueFalse] localName is [FieldRequiredMustValueFalse] without namespace Examples from "Form Optional / Required" section of the form reference: form.mustvalue - a schema-required field is *displayed* as optional when form.mustvalue=false, still the value must be present to validate