# taxReserves.acknowledge

Reconcile a completed tax reserve whose invoice tax or receipt changed. Requires the exact fresh reviewedSnapshot, expectedRevision and an admin reason. Keeps the history and amount already moved. A remaining shortfall becomes a manual-only top-up suggestion; excess reserve remains blocked until an admin records its actual return. To record a return, supply returnedMinor, reference, transferredOn and both saved bank transaction IDs: a debit from the tax account and matching credit to the original receiving account. This checks actual same-currency bank evidence and never sends money or automatically returns funds.

`POST /api/v1/accounting/taxReserves.acknowledge`

Permissions: `accounting:read`, `accounting:write`, `accounting:admin` · Roles: admin · Idempotency key required · Send `expectedRevision`

MCP tool: `accounting_tax_reserves_acknowledge`

## Fields

| Field | Type | Required | Notes |
| --- | --- | --- | --- |
| `id` | string (ID) | Yes | The record's ID. |
| `expectedRevision` | integer | Yes | The record's current revision, from the last time you read it. If someone changed the record since, the request is refused with a conflict so you can reload and check before trying again. at most 9007199254740991; greater than 0. |
| `reviewedSnapshot` | string | Yes | SHA-256 hash as 64 lowercase hex characters. |
| `idempotencyKey` | string | Yes | Any unique text you generate once per intended change, so a retried request only happens once. Send it as the Idempotency-Key header instead if you prefer; if you send both they must match. 8–200 characters. |
| `reason` | string | Yes | A short note saying why, kept in the record's history. 1–500 characters. |
| `returnedMinor` | string |  | An amount in cents (the currency's smallest unit), written as a whole-number string such as "1250" for $12.50. Matches ^[1-9]\d{0,14}$. |
| `debitTransactionId` | string (ID) |  | The ID of the related record. |
| `creditTransactionId` | string (ID) |  | The ID of the related record. |
| `reference` | string |  | 1–300 characters. |
| `transferredOn` | string (date) |  | A date, as YYYY-MM-DD. |

## Example request

```bash
curl https://app.getoatmilk.com/api/v1/accounting/taxReserves.acknowledge \
  -H "Authorization: Bearer $OATMILK_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
  "id": "9a8b7c6d-5e4f-4a3b-8c2d-1e0f9a8b7c6d",
  "expectedRevision": 3,
  "reviewedSnapshot": "9f2b5c1d7e3a4b6c8d0e2f4a6b8c0d2e4f6a8b0c2d4e6f8a0b2c4d6e8f0a2b4c",
  "reason": "Synthetic example from the docs"
}'
```

Reference page: https://app.getoatmilk.com/docs/api/taxReserves.acknowledge