# reimbursements.matchPayment

Match a funded Wise reimbursement to its imported transfer using Wise's exact transfer reference and source amount. The bank entry becomes a transfer.

`POST /api/v1/accounting/reimbursements.matchPayment`

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

MCP tool: `accounting_reimbursements_match_payment`

## Fields

| Field | Type | Required | Notes |
| --- | --- | --- | --- |
| `paymentId` | string (ID) | Yes | The ID of the related record. |
| `transactionId` | string (ID) | Yes | The ID of a bank or card transaction, from transactions.list. |
| `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. |
| `expectedBankEntryId` | string (ID) |  | The ID of the related record. |
| `expectedBankEntryRevision` | integer |  | The related record's current revision, from the last time you read it. at most 9007199254740991; greater than 0. |
| `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/reimbursements.matchPayment \
  -H "Authorization: Bearer $OATMILK_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
  "paymentId": "7f0f6c1e-1c1f-4b5e-9c8d-2f5e8e3c1a10",
  "transactionId": "7f0f6c1e-1c1f-4b5e-9c8d-2f5e8e3c1a10",
  "expectedRevision": 3
}'
```

Reference page: https://app.getoatmilk.com/docs/api/reimbursements.matchPayment