Methods and apparatuses for policy control are disclosed. According to an embodiment, a first network function receives a message from a second network function indicating to create or update one or more session rules and/or one or more Policy and Charging Control, PCC, rules. The first network function determines whether terminate a packet data unit, PDU, session based on a failure result of validation and/or enforcement of the session rules and/or PCC rules; and the first netwrok fucntion, when determining to terminate the PDU session based on the failure result, sends to the second network function a policy control delete message which comprises information indicating that the PDU session is terminated due to rule failure, including session rule failure and/or PCC rule failure.