Invalid XSD Streams 1.7

[dominique-ruest]

See screenshot for invalid definition. 'Unbounded' value is wrongly used at a couple of places in the XSD under an 'xs:all' element.

As per https://www.w3.org/TR/xmlschema-0/#groups

"The all group (which provides a simplified version of the SGML &-Connector) is limited to the top-level of any content model. Moreover, the group's children must all be individual elements (no groups), and no element in the content model may appear more than once, i.e. the permissible values of minOccurs and maxOccurs are 0 and 1."