# Update Bank Account
Update an existing bank account's details. Only non-sensitive fields can be modified.
## Request
### Headers
### Path Parameters
### Body Parameters
All fields are optional. Only provided fields will be updated.
:::note
Sensitive fields like `accountNumber`, `ifscCode`, and `bankName` cannot be modified after creation. To change these, delete and re-add the bank account.
:::
## Response
### Success (200 OK)
```json
{
"success": true,
"data": {
"id": "ba_xxxxx",
"accountNumber": "****5678",
"accountHolderName": "Acme Inc Updated",
"accountType": "CURRENT",
"bankName": "Bank of America",
"branchName": "New Branch",
"ifscCode": "BOFA0001234",
"isPrimary": true,
"createdAt": "2024-01-15T10:30:00.000Z"
}
}
```
### Error Responses
## Examples
```bash
curl -X PUT "https://api.zenpayz.com/merchant/api/v1/settlements/bank-accounts/ba_xxxxx" \
-H "Authorization: Bearer zp_test_xxxxx" \
-H "X-Timestamp: 2024-01-15T10:30:00.000Z" \
-H "X-Signature: a1b2c3d4e5f6..." \
-H "X-Secret-Salt: your_secret_salt" \
-H "Content-Type: application/json" \
-d '{
"isPrimary": true,
"branchName": "New Branch"
}'
```
```javascript
await zenpays.settlements.updateBankAccount('ba_xxxxx', {
isPrimary: true,
branchName: 'New Branch',
});
```