With regard to a method for transmitting and receiving data in a wireless communication system in the present specification, a method implemented by a first network node is characterized by comprising: transmitting a control message, including information pertaining to terminal context retention properties, to a terminal; receiving a first message including a first information block from the terminal; carrying out a verification process on the terminal on the basis of the received first message; and transmitting a second message to the terminal according to the results of the verification of the terminal, wherein the terminal context retention properties represent at least one of whether terminal context is retained or whether terminal context can be changed.