When an error occurs during client/server mode communication using OSI TP, the XATMI interface function that has requested the service returns with an error. For details on the values that may be returned, see the notes on the pertinent XATMI interface function in the applicable OpenTP1 Programming Reference manual.

When a communication protocol error occurs, take action according to the troubleshooting procedure in the manual OpenTP1 Protocol TP1/NET/OSI-TP-Extended.