How to add new fields to a data extract

The following data extract program generates an output file which is displayed using a publisher template as a check format report.
Oracle Payments Funds Disbursement Payment Instruction Extract 1.0
How would I add new fields to the generated file? In other words what is the procedure to add new fields to the data extract?


Do anyone pls advise how to customize the payment extraction program? We also have the similar requirement to extract extra fields to format a payment file.