error occurred by the communication with the RAP-processing server.
reason code=aa, IP address: bb...bb, port no=cccc

aa: Reason code for the error

302: The connection to the RAP-processing server was closed.

bb...bb: IP address of the node corresponding to the communicating RAP-processing server

cccc: Number of the well-known port for the communicating RAP-processing server

S: Cancels communication with the RAP-processing server.

O: Determine the cause of the error, and then eliminate the error.