Element cannot have character [children], because the type's content type is element-only

Question

I tried validating my XML file with a XSD file but I get the following error message:

[Error]: cvc-complex-type.2.3: Element \'paragraph\' cannot ha

Answer 1

This is precisely the purpose of mixed content:

And:

Note that you also probably want paragraph and definition to be in a xs:choice macOccurs="unbounded" given your XML.

Here's your XSD updated with all changes needed so that your XML will be valid: