Migration
Parallel run
Running old and new systems side by side for a short time to compare totals.
Planned: listed in the catalog, not built
What to plan for
- Double work
- Different rounding
- Staff confusion
What the catalog lists
No catalog item matches this topic closely. That is itself a finding: see the gap list.
Honesty note
Everything listed is a plan or a design principle. No app is released and nothing is audited or certified.