# imports.undo.apply

Undo explicitly selected import-owned groups atomically using the current preview fingerprint, reason, and idempotency key. Keep reviewed or edited transactions and detach their incorrect imported bank links when safe; remove only proved untouched derived entries. Preserves originals and audit. Closed periods and payment dependencies block changes.

`POST /api/v1/accounting/imports.undo.apply`

Permissions: `accounting:read`, `accounting:write` · Roles: admin, finance · Idempotency key required · Destructive: confirm with a person first

MCP tool: `accounting_imports_undo_apply`

## Fields

| Field | Type | Required | Notes |
| --- | --- | --- | --- |
| `batchId` | string (ID) | Yes | The ID of the related record. |
| `groupIds` | array of strings | Yes | A list of record IDs. 1–10001 items; each at most 64 characters. |
| `entryTreatments` | array of objects |  | at most 10000 items. |
| `entryTreatments[].entryId` | string (ID) | Yes | The ID of an accounting entry, from entries.list or attention.mine. |
| `entryTreatments[].treatment` | enum | Yes | One of: `keep_entry`, `remove_derived_entry`. |
| `previewFingerprint` | string | Yes | SHA-256 hash as 64 lowercase hex characters. |
| `reason` | string | Yes | A short note saying why, kept in the record's history. 3–1000 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/imports.undo.apply \
  -H "Authorization: Bearer $OATMILK_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
  "batchId": "7f0f6c1e-1c1f-4b5e-9c8d-2f5e8e3c1a10",
  "groupIds": [
    "example"
  ],
  "previewFingerprint": "9f2b5c1d7e3a4b6c8d0e2f4a6b8c0d2e4f6a8b0c2d4e6f8a0b2c4d6e8f0a2b4c",
  "reason": "Synthetic example from the docs"
}'
```

Reference page: https://app.getoatmilk.com/docs/api/imports.undo.apply