(41)In order to complement the prohibition of market manipulation, this Regulation should include a prohibition against attempting to engage in market manipulation. An attempt to engage in market manipulation should be distinguished from behaviour which is likely to result in market manipulation as both activities are prohibited under this Regulation. Such an attempt may include situations where the activity is started but is not completed, for example as a result of failed technology or an instruction to trade which is not acted upon. Prohibiting attempts to engage in market manipulation is necessary to enable competent authorities to impose sanctions for such attempts.