What NoticePack refuses
The generator blocks download when the date engine or form checks fail.
Full catalogue with stable reason strings and test ids:
docs/REFUSAL-MATRIX.md (repo).
- Wales, Scotland, or Northern Ireland (England Form 4A only)
- Social housing (Form 4 — wrong form family)
- Proposed start that is not a rent-period start
- Proposed start inside the 52-week bar from the last increase (or tenancy start)
- Email (or other service) that misses the two-month notice from deemed service — e.g. Fixture A late email