Specify the file name on the first line that defines an output record for the file. The file name specified must be the same file name assigned to the output, update, or combined file on the file description specifications. If records from files are interspersed on the output specifications, the file name must be specified each time the file changes.
For files specified as output, update, combined or input with ADD, at least one output specification is required unless an explicit file operation code with a data structure name specified in the result field is used in the calculations. For example, a WRITE operation does not require output specifications.