(1) For CRDs, top-level IERs identify:
(a) Who are the information producers?
(b) What information is produced?
(c) Why the information is necessary?
(d) Who are the information consumers?
(e) How do the consumers make use of the
(2) Top-level IERs identify warfighter information used in
support of a particular mission-related task and exchanged between at
least two operational systems supporting a joint or combined mission.
(3) A top-level IER matrix provided in a worksheet format will
be part of CRDs when submitted.
(4) Top-level IERs may also be imported into modeling and
evaluation tools including network warfare simulation (NETWARS) and other
architecture planning and analysis systems.
(5) The top-level IER matrix must correlate with the proposed
high-level operational concept graphic(s) and system interface
(6) A sample top-level IER matrix is illustrated in reference j, which provides detailed
guidance for completing the matrix.
(7) In the development of the top-level IER matrix, the
originator will determine if a given top-level IER is critical (top-level
IER matrix field).
(8) A CRD critical top-level IER is an information exchange
that is so a significant that if it does not occur the CRD mission area
will be adversely impacted. IERs that must be flowed down to specific
systems (ORDs) should be clearly specified in the CRD. An ORD critical
top-level IER supports its associated CRD critical top-level IER, or will
severely and adversely impact on a warfighter mission if not
b. Interoperability Key Performance Parameter