---
title: "Unassign a transaction payment · Bills · COUNT Partner API"
description: "Removes a previously applied expense transaction payment from a bill. POST /partners/bills/{uuid}/unassign-transaction"
canonical: "https://developers.getcount.com/reference/bills/unassign-bill-transaction"
source: "https://developers.getcount.com/reference/bills/unassign-bill-transaction"
---
[Bills](https://developers.getcount.com/reference/bills) / Unassign a transaction payment

# Unassign a transaction payment

POST `/partners/bills/{uuid}/unassign-transaction`

Removes a previously applied expense transaction payment from a bill.

Restores the bill open balance and unlinks the transaction from accounts payable. transactionId is the transaction UUID.

HMAC signature + Bearer access token

[Try this request](https://developers.getcount.com/tools/try-it?method=POST&path=%2Fpartners%2Fbills%2F%7Buuid%7D%2Funassign-transaction&body=%7B%0A++%22transactionId%22%3A+%22b7c8d9e0-f1a2-3456-bcde-678901234567%22%2C%0A++%22withCaution%22%3A+false%0A%7D)

[Transactions API](https://developers.getcount.com/reference/transactions) [Vendors API](https://developers.getcount.com/reference/vendors) [Chart of Accounts API](https://developers.getcount.com/reference/chart-of-accounts)

#### Path parameters

`uuid` uuid required

The bill UUID.

#### Request body

`transactionId` uuid required

UUID of the payment transaction to remove.

`withCaution` boolean

When true, allows unassign in edge reconciliation cases.

#### Responses

`200` Transaction unassigned from bill.

`404` Bill or transaction not found.

`401` Missing or invalid HMAC signature, expired timestamp, or invalid Bearer token. [Troubleshoot](https://developers.getcount.com/getting-started/errors#error-401)

`403` The credential does not have access to this workspace or resource. [Troubleshoot](https://developers.getcount.com/getting-started/errors#error-403)

`429` Rate limit exceeded (100 requests per minute per clientId). Retry after the Retry-After header. [Troubleshoot](https://developers.getcount.com/getting-started/errors#error-429)

[Previous POST Assign transactions as payment](https://developers.getcount.com/reference/bills/assign-bill-transaction)

POST `https://api.getcount.com/partners/bills/{uuid}/unassign-transaction`

Request

```javascript
import crypto from 'node:crypto';

const BASE_URL = 'https://api.getcount.com';
const CLIENT_ID = process.env.COUNT_CLIENT_ID;
const CLIENT_SECRET = process.env.COUNT_CLIENT_SECRET;
const ACCESS_TOKEN = process.env.COUNT_ACCESS_TOKEN;

const method = 'POST';
const signingPath = '/bills/3fa85f64-5717-4562-b3fc-2c963f66afa6/unassign-transaction';
const timestamp = Math.floor(Date.now() / 1000).toString();
const body = {
  "transactionId": "b7c8d9e0-f1a2-3456-bcde-678901234567",
  "withCaution": false
};
const bodyString = JSON.stringify(body);

const bodyHash = crypto.createHash('sha256').update(bodyString).digest('hex');
const baseString = `${method}:${signingPath}:${timestamp}:${bodyHash}`;
const signature = crypto.createHmac('sha256', CLIENT_SECRET).update(baseString).digest('hex');

const response = await fetch(`${BASE_URL}/partners/bills/3fa85f64-5717-4562-b3fc-2c963f66afa6/unassign-transaction`, {
  method,
  headers: {
    'x-client-id': CLIENT_ID,
    'x-timestamp': timestamp,
    'x-signature': signature,
    'Content-Type': 'application/json',
    Authorization: `Bearer ${ACCESS_TOKEN}`,
  },
  body: bodyString,
});

console.log(await response.json());
```

Response · 200

```json
{
  "status": "success",
  "message": "Transaction unassigned from bill",
  "data": {
    "id": "b2c3d4e5-f6a7-8901-bcde-f23456789012",
    "billNumber": "BILL-1042",
    "billType": "bill",
    "date": "2026-01-15",
    "dueDate": "2026-02-15",
    "currency": "USD",
    "approvalStatus": "approved",
    "status": "unpaid",
    "total": 250,
    "paidAmount": 0,
    "amountDue": 250,
    "notes": "Office supplies for Q1",
    "purchaseOrderNumber": null,
    "isDeleted": false,
    "vendor": {
      "id": "f1a2b3c4-d5e6-7890-abcd-ef1234567890",
      "name": "Office Depot",
      "email": "ap@officedepot.example"
    },
    "lineItems": [
      {
        "id": "a4b5c6d7-e8f9-0123-abcd-456789012345",
        "description": "Office supplies",
        "quantity": 1,
        "price": 250,
        "total": 250,
        "categoryAccountUuid": "c3d4e5f6-a7b8-9012-cdef-123456789012"
      }
    ],
    "transactions": [],
    "appliedVendorMemos": [],
    "tagUuids": [],
    "createdAt": "2026-01-15T10:30:00.000Z",
    "updatedAt": "2026-01-28T14:22:30.000Z"
  }
}
```