We use RA 10 for all the sites but now they want to change it 9 for only 3 sites due to some issues with roaming. Is it OK to change it just like that or do I need to follow any prcodures? We use Siemens BSC. I know its just a parameter change in Radio Commander but do I need to change anything on SGSN side. We do very less traffic. Please answer my questions. Thanks.