On 27 October 1972, the designations XLIM-99A and XLIM-100A were reserved by the U.S. Army for unidentified missiles. Unfortunately no further details are available, but the reservation was apparently not followed-up by a formal request for nomenclature allocation (see the LIM-99 page for a brief discussion about which missile projects might have had reserved the numbers 99/100).
The missile project, for which the LIM-100 designation was reserved, has not been identified so far.
 Department of Defense Missile Nomenclature Records
Last Updated: 24 December 2002