Element 517302 references PCOMPG 2 without being included in any STACK. Can someone help me?

RafaelC_21253

Im trying to do a Carbon sheet for a motorcycle aluminium frame to reduce mass and keep the stiffness. Any sugestion?
In the image, at blue in my frame and at pink is my carbon sheet. 

First i designed my frame in Inventor and added a surface to put my carbon plys. 

Community-Pasted-Attachment-1725553812284.png

Adriano_Koga

if the element is contained into a component that has the PCOMPG property, then it should be refereneced as well in at least one ply of your stack/laminate.

Maybe you've missed this (and potentially other) element in adding it to a ply/laminate.