MasterValidator.AddValidation(ValidationHelper.IsEmpty(MasterValidator.settings["streetNumberField"], "Street number", "has not been entered, please enter your street number."));
MasterValidator.AddValidation(ValidationHelper.IsEmpty(MasterValidator.settings["streetNameField"], "Street name", "has not been entered, please enter your street name."));
MasterValidator.AddValidation(validateStreetType(MasterValidator.settings["streetTypeField"]));