Changing that address is essentially changing how things on the network communicate.
For example, someone using a 192.168.1.1 home network won’t be able to access a secured business network like 10.1.1.1. Secondly, to have access between other devices and the SAP server, you will have to put them in the same subnet (255.240.0.0 probably) so they become visible on the network.
Hope this helps!
I recommend implementing DNS. This will permit you to use NAMES for systems/services rather than going to a specific IP address or modifying the hosts file on computers. The devices do not have to be on the same subnet as the server host but they do need to have a way to get to the different subnet. That method is usually a layer 3 switch or a router. This is how you can get between different subnets like the 192.168.1.1 and the 10.1.1.1 network.