disclosed is a system and method for managing xdm service information to improve management efficiency for oma service information . the apparatus includes a controller for creating a shared user resource identifier , and using a value created by the controller as a static value to be used as a newly - created reference handle for shared service information referred to by service information . the newly - created value is set as an unchanged value , thereby preventing signaling overhead , compatibility degradation , and resource waste due to modification of the shared service information .