curl --request PATCH \
  --url https://app.yampi.ai/api/v1/accounts/{account_id}/treasury/bank_statements/{id} \
  --header 'Content-Type: application/json' \
  --header 'api_access_token: <api-key>' \
  --data '
{
  "bank_statement": {
    "opening_balance": 123,
    "closing_balance": 123
  }
}
'

const options = {
  method: 'PATCH',
  headers: {api_access_token: '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({bank_statement: {opening_balance: 123, closing_balance: 123}})
};

fetch('https://app.yampi.ai/api/v1/accounts/{account_id}/treasury/bank_statements/{id}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://app.yampi.ai/api/v1/accounts/{account_id}/treasury/bank_statements/{id}"

payload = { "bank_statement": {
        "opening_balance": 123,
        "closing_balance": 123
    } }
headers = {
    "api_access_token": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.patch(url, json=payload, headers=headers)

print(response.text)

{
  "payload": {
    "id": 123,
    "reference": "<string>",
    "bank_id": "<string>",
    "bank_name": "<string>",
    "format": "<string>",
    "status": "<string>",
    "period_start_on": "2023-12-25",
    "period_end_on": "2023-12-25",
    "credits_amount": 123,
    "debits_amount": 123,
    "lines_count": 123,
    "auto_matched_count": 123,
    "imported_by_id": 123,
    "created_at": "2023-11-07T05:31:56Z",
    "bank_account_id": 123,
    "account_name": "<string>",
    "opening_balance": 123,
    "import": {
      "persisted_count": 123,
      "skipped_duplicates": 123,
      "debits_persisted_count": 123
    },
    "lines": [
      {
        "id": 123,
        "posted_on": "2023-12-25",
        "amount": 123,
        "currency": "<string>",
        "kind": "<string>",
        "description": "<string>",
        "bank_reference": "<string>",
        "status": "<string>",
        "payment_id": 123,
        "subscription_id": 123,
        "billing_cycle_id": 123,
        "candidates": [
          {}
        ],
        "payout_id": 123,
        "ledger_line_id": 123,
        "movement": {},
        "adjustment_kind": "<string>",
        "match_rule": "<string>"
      }
    ],
    "balance": {
      "currency": "<string>",
      "opening_balance_cents": 123,
      "book_balance_cents": 123,
      "difference_cents": 123,
      "pending_count": 123,
      "adjustments": {}
    },
    "confirmed_count": 123
  }
}

{
  "description": "<string>",
  "errors": [
    {
      "field": "<string>",
      "message": "<string>",
      "code": "<string>"
    }
  ]
}

{}

{}