I personally do not advocate aggressive liposuction which in my experience is any volume >5 liters in one setting. it can cause serious fliud shifts and can cause problems with recovery as well as final result. not sure why you are asking but this is a good question for your doctor
Liposuction, like everything else, can be overdone. The experienced plastic surgeon is aggressive but not too aggressive. Patients want the maximum improvement (I am frequently told just before surgery, "Don't hold back, doc") but they don't want complications or unnecessary postoperative pain either. Taking out too much fat leaves contour depressions that are difficult to correct later (by fat injection) and are best prevented.