On Mon, 6 Jun 2022 09:19:51 +0000, Jānis Elmeris wrote: > Yes, an unescaped ampersand is not allowed in XML, including the > attributes. See the exaplanation and examples here: > https://www.w3resource.com/xml/prohibited-character-literals.php > > You can also use XML validation tools to see if your sample XMLs are > valid, e.g.: https://www.xmlvalidation.com/ Thank you. http://validator.w3.org is a good validator too. It feels like an oversight in the specs though, that such a common url character is forbidden. Oh well, it is what it is.