FIX protocol version 4.4 filed InstrAttribType (871) should include the types described in "Description" section.

Documentation Links
http://www.onixs.biz/tools/fixdictionary/4.4/tagNum_871.html
http://fixprotocol.org/FIXimate3.0/en/FIX.4.4/tag871.html

The Types which I didn't find in InstrAttribType (871) field in FIX44.xml file are:
<value enum="10" description="ORIGINAL_ISSUE_DISCOUNT"/>
<value enum="11" description="CALLABLE_PUTTABLE"/>
<value enum="12" description="ESCROWED_TO_MATURITY"/>
<value enum="13" description="ESCROWED_TO_REDEMPTION_DATE"/>
<value enum="14" description="PRE_REFUNDED"/>
<value enum="15" description="IN_DEFAULT"/>
<value enum="16" description="UNRATED"/>
<value enum="17" description="TAXABLE"/>
<value enum="18" description="INDEXED"/>
<value enum="19" description="SUBJECT_TO_ALTERNATIVE_MINIMUM_TAX"/>
<value enum="20" description="ORIGINAL_ISSUE_DISCOUNT_PRICE_SUPPLY_PRICE_IN_THE_INSTRATTRIBVALUE"/>
<value enum="21" description="CALLABLE_BELOW_MATURITY_VALUE"/>
<value enum="22" description="CALLABLE_WITHOUT_NOTICE_BY_MAIL_TO_HOLDER_UNLESS_REGISTERED"/>
<value enum="99" description="TEXT_SUPPLY_THE_TEXT_OF_THE_ATTRIBUTE_OR_DISCLAIMER_IN_THE_INSTRATTRIBVALUE"/>

Missing data affect error-checking in the InstrAttribType (871) field further in the code.