01Architecture decision

Start with workflow meaning, ownership, failure modes, support boundaries, and validation evidence. Protocol selection follows those decisions—not the other way around.

02Production checklist

  1. 01Confirm source of truth, direction, identifiers and ownership.
  2. 02Validate normal, abnormal, corrected and downtime workflows.
  3. 03Design acknowledgements, retry, replay and reconciliation.
  4. 04Protect patient and confidential data in logs.
  5. 05Rehearse cutover, rollback, monitoring and handover.

03Common mistakes

Do not treat transport connectivity as completed interoperability. Field semantics, units, flags, status, correlation, mapping governance and exception ownership determine whether the interface is safe.