A method performed by a STA may comprise transmitting a first ANQP message to an AP and receiving a second ANQP message in response. The second ANQP message may comprise a CCC value representing a configuration instance of the AP which is incremented by one upon a configuration change. The CCC value may wrap around once a maximum value is reached. The first ANQP message may comprise the CCC value or may comprise another CCC value which is different than the CCC value.