OptionalallowAllow blank cells
OptionalallowedList of allowed values (for list type)
OptionalerrorError message
OptionalerrorError style
OptionalerrorError title
Optionalformula1Formula or value for validation
Optionalformula2Second formula/value for between operators
OptionalinputInput message
OptionalinputInput title
OptionaloperatorOperator for numeric/date/text validations
Cell range to apply validation
OptionalshowShow dropdown for list validation
OptionalshowShow error alert
OptionalshowShow input message
Validation type
Data validation rule