It looks like you are using Neutron and not Nova-Network ?
Also, can you provide the stack template in which you are using the non-existing network resource ID.
I'd like to reproduce the error and see if there is a way to expose the reason through stack_status_reason.
It looks like you are using Neutron and not Nova-Network ? reason.
Also, can you provide the stack template in which you are using the non-existing network resource ID.
I'd like to reproduce the error and see if there is a way to expose the reason through stack_status_