# GovOPlaN Payments

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**Repository type:** module (domain).
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`govoplan-payments` owns replay-safe payment obligations, human payment
references, append-only lifecycle evidence, and settlement reconciliation.

The first vertical slice implements full manual/offline payment receipt. A
Case, Workflow, or other procedure calls the Core `payments.requests`
capability, retains the returned payment ID, and later supplies the exact
amount/currency, external transaction reference, and a same-tenant versioned or
checksum-bound evidence reference. Payments rejects changed replays, partial or
cross-currency matches, cross-tenant evidence, and a second settlement.

Online payment providers, applicant checkout, partial payments, refunds,
reversals, Ledger posting, and XRechnung are intentionally separate next
slices. See [docs/PAYMENTS_DOMAIN.md](docs/PAYMENTS_DOMAIN.md).

Focused verification:

```sh
PYTHONPATH=src:/mnt/DATA/git/govoplan-core/src \
  /mnt/DATA/git/govoplan/.venv/bin/python -m unittest discover -s tests
```