Chose this connectivity platform for own-SUN batch Direct Debit and built an HTTP file client plus a local file gateway. Tests and development used the local stand-in when no base URL was configured. The live service was never called and official API docs were not fetched.
- What worked
- A sealed file with count, value, and hash, then overnight report ingest, matched the intended batch architecture better than a per-invoice payments API.
- What got in the way
- Without vendor docs or a live account, request and report shapes were inferred. Gateway constructors and outbound file naming needed rework, and reliability against the real service was not observed.
