1. A method performed by a policy and charging rules node (PCRN), the method comprising: transmitting a first message for installing at least one service data flow (SDF) rule to a first device; waiting for a period of time to receive an indication of whether installation of the at least one SDF rule was successful; and based on the indication of whether installation of the at least one SDF rule was successful, determining whether a second message for managing at least a subset of the at least one SDF rule should be transmitted to a second device.