In the SD-WAN Solution, the RR and CPE cannot be the same device.

In the Huawei SD-WAN architecture, the RR (Route Reflector) is responsible for distributing VPN routes and tunnel information. While in large-scale deployments the RR is often a standalone high-performance router or a virtual machine in the cloud, in small and medium-sized deployments, a physical CPE (Customer Edge) device can function as the RR. This "collocated" mode reduces hardware costs and simplifies the network hierarchy for smaller organizations.