# LoanBrokerSet

[[Source]](https://github.com/XRPLF/rippled/blob/develop/src/xrpld/app/tx/detail/LoanBrokerSet.cpp)

Attention
Lending Protocol and Single Asset Vaults are disabled on Devnet. You have two options for testing these features:

1. Run `rippled` in [stand-alone mode](https://xrpl.org/docs/concepts/networks-and-servers/rippled-server-modes#stand-alone-mode) and enable `LendingProtocol` and `SingleAssetVault` in the [rippled.cfg file](https://xrpl.org/docs/infrastructure/testing-and-auditing/test-amendments).
2. Connect to the Lending Protocol-specific Devnet at `https://lend.devnet.rippletest.net:51234/`.


Creates or updates a `LoanBroker` ledger entry, configuring protocol parameters and associating it with a `Vault`.

Only the owner of the associated vault can initiate this transaction.

*(Requires the [Lending Protocol amendment](https://github.com/Tapanito/XRPL-Standards/tree/xls-66-lending-protocol/XLS-0066d-lending-protocol) )*

## Example  JSON


```json
{
  "TransactionType": "LoanBrokerSet",
  "Account": "rEXAMPLE9AbCdEfGhIjKlMnOpQrStUvWxYz",
  "Fee": "12",
  "Flags": 0,
  "LastLedgerSequence": 7108682,
  "Sequence": 8,
  "VaultID": "ABCDEF1234567890ABCDEF1234567890ABCDEF1234567890ABCDEF1234567890",
  "LoanBrokerID": "E123F4567890ABCDE123F4567890ABCDEF1234567890ABCDEF1234567890ABCD",
  "Data": "5468697320697320617262697472617279206D657461646174612061626F757420746865206C6F616E62726F6B65722E",
  "ManagementFeeRate": 100,
  "DebtMaximum": 100000,
  "CoverRateMinimum": 1000,
  "CoverRateLiquidation": 500
}
```

##  Fields

In addition to the [common fields](https://xrpl.org/docs/references/protocol/transactions/common-fields/),  transactions use the following fields:

| Field Name | JSON Type | Internal Type | Required? | Description |
|  --- | --- | --- | --- | --- |
| `VaultID` | String | Hash256 | Yes | The ID of the vault that the lending protocol will use to access liquidity. |
| `LoanBrokerID` | String | Hash256 | No | The loan broker ID that the transaction is modifying. |
| `Data` | String | Blob | No | Arbitrary metadata in hex format--limited to 256 bytes. |
| `ManagementFeeRate` | Number | UInt16 | No | The 1/10th basis point fee charged by the lending protocol owner. Valid values range from `0` to `10000` (inclusive), representing 0% to 10%. |
| `DebtMaximum` | Number | Number | No | The maximum amount the protocol can owe the vault. The default value of `0` means there is no limit to the debt. Must be a positive value. |
| `CoverRateMinimum` | Number | UInt32 | No | The 1/10th basis point `DebtTotal` that the first-loss capital must cover. Valid values range from `0` to `100000` (inclusive), representing 0% to 100%. |
| `CoverRateLiquidation` | Number | UInt32 | No | The 1/10th basis point of minimum required first-loss capital that is moved to an asset vault to cover a loan default. Valid values range from `0` to `100000` (inclusive), representing 0% to 100%. |


When this transaction modifies an existing `LoanBroker` ledger entry, you can only modify `Flags`, `Data`, and `DebtMaximum`.

## Error Cases

Besides errors that can occur for all transactions,  transactions can result in the following [transaction result codes](https://xrpl.org/docs/references/protocol/transactions/transaction-results):

| Error Code | Description |
|  --- | --- |
| `temINVALID` | The transaction is trying to modify a fixed field. You can only update the values for `Flags`, `Data`, or `DebtMaximum`. |
| `tecNO_PERMISSION` | The account submitting the transaction doesn't own the associated `Vault` ledger entry. You can also receive this error if the transaction tries to modify the `VaultID` of an existing `LoanBroker` ledger entry. |
| `tecNO_ENTRY` | A `LoanBroker` entry with the specified ID does not exist. You can also receive this if the specified `VaultID` doesn't exist. |
| `tecINSUFFICIENT_RESERVE` | The owner's account doesn't have enough to cover the reserve requirement for the new `LoanBroker` ledger entry. |