This Recommendation is part of the set of Specification and description language Recommendations for SDL-2008. It defines a UML profile that maps to SDL 2008 semantics so that UML can be used in combination with SDL. The combined use of SDL 2000 and UML permits a coherent way to specify the structure and behaviour of telecommunication systems, together with data. This Recommendation is revised to be consistent with the rest of the ITU-T Z.100 series for SDL-2008, because it references the abstract grammar of the language and paragraphs for transformation models in other Recommendations in the series.