I imagine no specific reason for that so I guess that it is a bug.
here is the error in Eclipse:
cvc-complex-type.2.4.a: Invalid content was found starting with element 'asn1'. One of '
{"http://camel.apache.org/schema/spring":avro, "http://camel.apache.org/schema/spring":barcode, "http://camel.apache.org/schema/spring":base64, "http://camel.apache.org/schema/spring":beanio, "http://camel.apache.org/schema/spring":bindy, "http://camel.apache.org/schema/spring":boon, "http://camel.apache.org/schema/spring":castor, "http://camel.apache.org/schema/spring":crypto, "http://camel.apache.org/schema/spring":csv, "http://camel.apache.org/schema/spring":custom, "http://camel.apache.org/schema/spring":flatpack, "http://camel.apache.org/schema/spring":gzip, "http://camel.apache.org/schema/spring":hessian, "http://camel.apache.org/schema/spring":hl7, "http://camel.apache.org/schema/spring":ical, "http://camel.apache.org/schema/spring":jacksonxml, "http://camel.apache.org/schema/spring":jaxb, "http://camel.apache.org/schema/spring":jibx, "http://camel.apache.org/schema/spring":json, "http://camel.apache.org/schema/spring":lzf, "http://camel.apache.org/schema/spring":mimeMultipart, "http://camel.apache.org/schema/spring":protobuf, "http://camel.apache.org/schema/spring":rss, "http://camel.apache.org/schema/spring":secureXML, "http://camel.apache.org/schema/spring":serialization, "http://camel.apache.org/schema/spring":soapjaxb, "http://camel.apache.org/schema/spring":string, "http://camel.apache.org/schema/spring":syslog, "http://camel.apache.org/schema/spring":tarfile, "http://camel.apache.org/schema/spring":tidyMarkup, "http://camel.apache.org/schema/spring":univocity-csv, "http://camel.apache.org/schema/spring":univocity-fixed, "http://camel.apache.org/schema/spring":univocity-tsv, "http://camel.apache.org/schema/spring":xmlBeans, "http://camel.apache.org/schema/spring":xmljson, "http://camel.apache.org/schema/spring":xmlrpc, "http://camel.apache.org/schema/spring":xstream, "http://camel.apache.org/schema/spring":pgp, "http://camel.apache.org/schema/spring":yaml, "http://camel.apache.org/schema/spring":zip, "http://camel.apache.org/schema/spring":zipFile}
' is expected.
CAMEL-11941 Online xsd is not the latest 2.20 one
CAMEL-11938 Thrift data format is not part of the xsd for dataformats