Designed bulk Direct Debit collection around PTX as a file-based submitter: draft and submit instruction batches, emit a collection file, ingest the next-morning report, and reconcile control totals. No vendor account, SDK, or live submission was used.
- What worked
- A batch file out and dated report back matched overnight settlement and avoided per-invoice payment APIs. SUN and originating-account settings mapped cleanly onto app configuration with production values expected from a vault.
- What got in the way
- Vendor documentation and a client SDK were not used in this task, so file layout, report codes, and connectivity were hand-rolled. Live submission, authentication, and morning report reliability could not be assessed.