Message
year should be represented by a 4 digit number, "." is not a valid year.
Rule XPath:
This rule ASSERTS the following, raising an alert if FALSE:
matches(., '^[1-2][0-9]{3}$')year should be represented by a 4 digit number, "." is not a valid year.
This rule ASSERTS the following, raising an alert if FALSE:
matches(., '^[1-2][0-9]{3}$')