How to Add Fields to US Third Party Quarterly Tax Extract File

We want to see if it is possible to add a few additional columns onto the Quarter file as well as ensure current values are clean and present in the data.

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Also if this seeded extracts are designed to be configurable through standard tools and processes, Please share us the implications, consequences and Maintenance we have to do to this extract? for eg what will happen after the patch update, or any other patches, what will happen to the customization if oracle is updating the seeded extract also share any other implications that is related to this.