Although a variety of specialised formalisms have been proposed specifically for enterprise modelling, the use of existing modelling languages has not received as much attention. In this paper, we demonstrate that the systems modelling formalism SysML is in fact not sufficient to act as a standalone language for enterprise modelling. To demonstrate this claim, we show that there are four key enterprise modelling scenarios that cannot be addressed while adhering to SysML semantics: temporal representation, timing and scheduling, collaborations between two or more teams and decision trees .