A Notice of Violation is a formal citation that a Community Rule or permit condition has been violated. There are financial penalties too, which vary according to the severity of the violation.
As mentioned in the Notice of Violation, you are required to comply within the time frame specified and ensure that the issue is not repeated in the future. You may contact ECM on 800 EMAAR (36227) for any clarification you might require.
The fine you pay is treated as community income and is credited to the community accounts.