An information processing apparatus, output system, information processing method, and an information processing program stored in a non-transitory recording medium, each of which controls interaction between an upper-level program and a lower-level program, by providing the functions of: storing output processing information relating to output processing being performed or to be performed on output data, in association with output data identification information; and sending the output processing information associated with the output data identification information to the upper-level program, in response to the output data identification information received from the upper-level program.