Sure. Found out AA had two problems with my routing.

My routing:
HND-JFK-EZE
EZE-JFK
JFK-LHR-CPT
CPT-DOH
DOH-PRG
PRG-DOH
DOH-LHR
LHR-HEL
HEL-HKG-AKL
AKL-MEL
MEL-HKG-DEL
DEL-HND



Issue AA are finding with above itinerary:
First issue is CPT routing. The JFK-LHR-CPT-DOH part. So once i even have a layover in Europe and go to SA i cannot go back to Europe. That's what i am being told.
Second issue is they are telling me i cannot go even for a layover in Asia and comeback to Asia again. So the HEL-HKG-AKL as i comeback to Asia when i do MEL-HKG-DEL-HND part.

I am sure the experts here have already figured out, the attempt here is to work out an itinerary that is as lengthy with long flight starting from hubs to a long haul destination.

The flights that were super important to me that i would want to keep, if possible, would be:
JL- HND-JFK
AA - JFK-EZE
BA - LHR-CPT
QR- DOH-LHR
AY - HEL-HKG
CX - HKG- AKL

Hope can find something feasible.