This is SBCL 1.4.14-2.fc30, an implementation of ANSI Common Lisp.
More information about SBCL is available at <http://www.sbcl.org/>.

SBCL is free software, provided as is, with absolutely no warranty.
It is mostly in the public domain; some portions are provided under
BSD-style licenses.  See the CREDITS and COPYING files in the
distribution for more information.
(declaim (sb-ext:muffle-conditions cl:warning))
((#<SB-KERNEL::CONDITION-CLASSOID WARNING> . MUFFLE-WARNING))
*
(defun fix-field (&key field-id field-name required data-type) t)
FIX-FIELD
(defun fix-message (&rest fix-fields &key version message-type-name) t)
FIX-MESSAGE
*
(fix-message :version "4.2" :message-type-name "Logon"
     (fix-field :field-id 98 :field-name "EncryptMethod" :required t :data-type 'integer)
     (fix-field :field-id 108 :field-name "HearBtInt" :required t :data-type 'integer)
     (fix-field :field-id 95 :field-name "RawDataLength" :required t :data-type 'integer)
     (fix-field :field-id 96 :field-name "RawData" :required t :data-type 'string)
     (fix-field :field-id 141 :field-name "ResetSeqNumFlag" :required nil :data-type 'boolean)
     )

debugger invoked on a SB-INT:SIMPLE-PROGRAM-ERROR in thread
#<THREAD "main thread" RUNNING {10005205B3}>:
  odd number of &KEY arguments

Type HELP for debugger help, or (SB-EXT:EXIT) to exit from SBCL.

restarts (invokable by number or by possibly-abbreviated name):
  0: [ABORT] Exit debugger, returning to top level.

(FIX-MESSAGE :VERSION "4.2" :MESSAGE-TYPE-NAME "Logon" T T T T T) [more]
   source: (SB-INT:NAMED-LAMBDA FIX-MESSAGE
               (&REST FIX-FIELDS &KEY VERSION MESSAGE-TYPE-NAME)
             (BLOCK FIX-MESSAGE T))
0]