# setTokenFactors

Updates token-related factors of the protocol by `tokenId` of yToken.

{% hint style="warning" %}
The `yToken` contract expects that underlying token info of `tokenId` is updated by calling [PriceFeed.getPrice](/yupana-document-portal/developer-space/pricefeed-contract/getprice.md) and [updateInterest](/yupana-document-portal/developer-space/ytoken-contract-methods/updateinterest.md) in the same block **before** this call.
{% endhint %}

### Types

```pascaligo
type setTokenParams     is [@layout:comb] record [
  tokenId               : nat;
  collateralFactorF     : nat;
  reserveFactorF        : nat;
  interestRateModel     : address;
  maxBorrowRate         : nat;
  threshold             : nat;
  liquidReserveRateF    : nat;
]
```

<table><thead><tr><th width="179.33333333333331" align="center">Parameter</th><th align="center">Type</th><th>Description</th></tr></thead><tbody><tr><td align="center">tokenId</td><td align="center">nat</td><td>token identifier</td></tr><tr><td align="center">collateralFactorF</td><td align="center">nat</td><td><p>collateral factor </p><p>as float number multiplied by <code>precision</code>= 1000000000000000000n; (1e+18)</p></td></tr><tr><td align="center">reserveFactorF</td><td align="center">nat</td><td><p>reserve factor</p><p>as float number multiplied by <code>precision</code>= 1000000000000000000n; (1e+18)</p></td></tr><tr><td align="center">interestRateModel</td><td align="center">address</td><td>priceFeed proxy contract instance</td></tr><tr><td align="center">maxBorrowRate</td><td align="center">nat</td><td></td></tr><tr><td align="center">threshold</td><td align="center">nat</td><td></td></tr><tr><td align="center">liquidReserveRateF</td><td align="center">nat</td><td></td></tr></tbody></table>

### Usage

{% tabs %}
{% tab title="🌮 Taquito" %}

```typescript
const tokenId = 0; // or new BigNumber(0) or "0"
const yupana = await tezos.contract.at(yTokenAddress);
const batchArray = [
      {
        kind: "transaction",
        ...yupana.methods.updateInterest(tokenId).toTransferParams(),
      },
      {
        kind: "transaction",
        ...proxy.methods.getPrice([tokenId]).toTransferParams(),
      },
      {
        kind: "transaction",
        ...yupana.methods.setTokenFactors(
          tokenId,
          650000000000000000,
          200000000000000000,
          "KT1...",
          5000000000000,
          550000000000000000
        ).toTransferParams(),
      },
    ];
const batch = await tezos.wallet.batch(batchArray);
const operation = await batch.send();
await operation.confirmation();
```

{% endtab %}

{% tab title="🐍   Pytezos" %}

```python
token_id = 0
PRECISION = pow(10, 18)
config = {
  "collateral_factor": 0.5,
  "reserve_factor": 0.5,
  "threshold": 0.8
}
yupana = ContractInterface.from_michelson(code) # or client.contract(contract_address)...
proxy = ContractInterface.from_michelson(prx_code) # or client.contract(prx_contract_address)...proxy = ContractInterface.from_michelson(code) # or client.contract(contract_address)...
call = pytezos.bulk(
        yupana.updateInterest(token_id),
        proxy.getPrice([token_id]),
        yupana.setTokenFactors(
             tokenId = token_id, 
             collateralFactorF = int(config["collateral_factor"] * PRECISION),
             reserveFactorF = int(config["reserve_factor"]  * PRECISION),
             interestRateModel = "KT1...",
             maxBorrowRate = 1_000_000  * PRECISION,
             threshold = int(config["threshold"] * PRECISION)
        )
    ).autofill().sign()
opg = call.inject()
```

{% endtab %}
{% endtabs %}

### Errors

* `yToken/not-admin` - `sender` is not contract admin.
* `yToken/need-update` - token price and interest not updated (see <mark style="color:orange;">warning</mark> above)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://yupana-finance.gitbook.io/yupana-document-portal/developer-space/ytoken-contract-methods/admin-methods/manage-entrypoints/settokenfactors.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.