# matching.receiptConsolidation.undo

Dashboard-only History rollback of a receipt consolidation whose exact revisions and source state remain unchanged. Restores only its receipt alias and added association; existing purchases, bank pieces, allocations, tax and review status remain intact.

`POST /api/v1/accounting/matching.receiptConsolidation.undo`

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

Not available over MCP: A person must review the current originals and exact payment group in Oatmilk before changing a receipt association.

## 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. |
| `receiptRevision` | integer | Yes | The related record's current revision, from the last time you read it. at most 9007199254740991; greater than 0. |
| `targetRevision` | integer | Yes | The related record's current revision, from the last time you read it. at most 9007199254740991; greater than 0. |
| `reason` | string | Yes | A short note saying why, kept in the record's history. 10–1000 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. |

## Example request

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

Reference page: https://app.getoatmilk.com/docs/api/matching.receiptConsolidation.undo