feature: match VAT country prefix and country code.

includes/filters-actions.php

@@ -231,6 +231,12 @@ function woolab_icdic_checkout_field_process() {
 		// Check if in EU
 		if ( $countries->isCountryCodeInEU( $country ) ) {
 
+			// Match VAT country prefix and country code.
+			// @since 1.7.3.
+			if ( substr( $dic, 0, 2) != $country ) {
+				wc_add_notice( __( 'The billing country does not correspond to the country of the VAT number.', 'woolab-ic-dic' ), 'error' );
+			}
+
 			// If Validate in VIES
 			// Slovak DIC cannot (and shouldn't) be validated in VIES
 			if ( woolab_icdic_vies_check() && $country != 'SK' ) {

readme.txt

@@ -131,6 +131,7 @@ Either post it on [GitHub](https://github.com/vyskoczilova/kybernaut-ic-dic) or
 = 1.7.3 () =
 
 * Feature: Localize address format for all EU countries.
+* Feature: Additional check - billing country and VAT country prefix must match.
 
 = 1.7.2 (2023-08-02) =