A previous message was issued indicating an error (for example, the wrong tape was mounted). The operator be able to correct the problem and resume processing (rather than rerunning the job).
The system waits for the operator response. If the response is Y, subsequent messages be issued to indicate the operator action required to resume processing. If the response is N, processing ends.
Probable user error. To continue, reply Y to ADRY509D, and then take action indicated by subsequent messages. To terminate, reply N to ADRY509D.
None.