+sub _specified_tax_registration {
+ my ($ustid_nr, %params) = @_;
+
+ return unless $ustid_nr;
+
+ $ustid_nr = "DE$ustid_nr" unless $ustid_nr =~ m{^[A-Z]{2}};
+
+ # <ram:SpecifiedTaxRegistration>
+ $params{xml}->startTag("ram:SpecifiedTaxRegistration");
+ $params{xml}->dataElement("ram:ID", _u8($ustid_nr), schemeID => "VA");
+ $params{xml}->endTag;
+ # </ram:SpecifiedTaxRegistration>
+}
+