Debugging shows external code


I am trying to release the SO to Warehouse. Since I am not having any quantity in warehouse I am not being able to release it which is fine. However I am getting an error which is not standard and must have come as part of some customization:

I tried debugging it but all I see in stack frame is external code which is invoking standard, what is this code I am not being able to track down can anyone please help me or provide any pointer:

It looks like normal code from Application Platform package. Unfortunately you’ve hidden the class name and haven’t shared any other details, therefore I can’t comment on it any further.

Maybe you just don’t know how to debug such code. As the first thing, check that you haven’t checked “Load symbols only for items in the solution” (in Dynamics 365 > Options > Debugging).