During a data set RESTORE from a logically formatted dump tape, the data set was not found on the tape. Possibly the data set name is contained in the data set name list at the beginning of the dump tape, but the data set was not dumped. (This can occur if the data set could not be serialized at dump time.) Either the wrong input file was used, an incorrect data set name was specified, or the data set was rejected because of the DSORG filtering criteria. This message is printed if fully qualified names are specified.