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g., NASA/JPL, NIST), modeling
tool manufacturers (e.g., IBM, Telelogic, ARTiSAN Software Tools, EmbeddedPlus
Engineering), and other cooperatives (e.g., INCOSE, ISO AP-233).
A fi rst draft of the language was submitted to OMG in October 2003. In
Summer 2005, the SysML Partners work group split-up into two ( SysML Partners
and SysML Submission Team ) due to disputes. In November 2005, the two groups
submitted competing SysML specifi cations to OMG. This caused some confusion
in the public perception of this work, the more so as the two specifi cations had
two different version numbers.
At the beginning of 2006, the two separate work groups found together again
( SysML Merge Team ). Eventually, there was a common specifi cation in the end of
the entire process, avoiding a crucial vote. At fi rst sight, the separation of the work
group appeared to have been destructive. A closer look in arrears reveals, however,
that it was rather healthy, encouraging a creative process, and it had a positive
effect on the quality of the SysML specifi cation.


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