You cannot removed all the elements from current solution. At least there should be two elements in the solution.

public static FailureDefinitionId NotAllowedToRemoveAllElements { get; }

Public Shared ReadOnly Property NotAllowedToRemoveAllElements As FailureDefinitionId
	Get

public:
static property FailureDefinitionId^ NotAllowedToRemoveAllElements {
	FailureDefinitionId^ get ();
}