I am trying to connect a R1 redundant network with S2 ring network using 2 Scalance managed switches and 2 Scalance Y switches. The ring ports have been correctly configured and the topologies have been created. However , while compiling the configuration, an unintentional ring network is being formed between the Scalance switch and the Y switch. This is causing the error "The ringport "SIMATIC H Station(1)\Y1-SCALANCE-XF204-2BA-DNA\Port 1 - RJ45 VD (R-/S2/X1 P1)" is connected to a port which is not a ringport." .  This error is coming for the 2 ports which are actually configured as ring ports and to the ports which are connected to it. If i disconnect any of the connection from one y switch to the switch , the compilation is done without any errors. I have attached the topology and error for reference. I am using Step 7 Ver 5.7 + HF4 to do the project.

Any help from the experts is highly appreciated. Thank You.