This is not a XML::Simple problem, since XML::Simple did the job right, it has created the HASH tree of the XML for you.

Your error is in the access of the HASH tree! Hehehe, and this remeber me why I have created XML::Smart, where the both access to the tree are right:

$parsed_xml->{descriptor}->[0]->{inputQueue};
# or
$parsed_xml->{descriptor}{inputQueue};
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