# claim\_interface\_tez\_fee

An entrypoint that allows users to claim their interface (referral) fee. Will claim all available fee. Supports only withdrawing of TEZ tokens from the specific [Bucket](/smart-contracts/dex-2.0/bucket-contract.md) contract. To withdraw TEZ tokens use [***claim\_interface\_fee***](/smart-contracts/dex-2.0/dexcore-contract/entrypoints-overview/dex-entrypoints/claim_interface_fee.md) entrypoint.

### Call parameters

```pascaligo
type token_id_t         is nat

type claim_tez_fee_t    is [@layout:comb] record [
  pair_id                 : token_id_t;
  receiver                : address;
]
```

<table><thead><tr><th width="150">Field</th><th width="150">Type</th><th>Description</th></tr></thead><tbody><tr><td>pair_id</td><td>token_id_t (nat)</td><td>Identifier of the liquidity pool (pair)</td></tr><tr><td>receiver</td><td>address</td><td>Receiver of withdrawn tokens</td></tr></tbody></table>

### Usage

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

```javascript
const dexCoreAddress = "KT1...";
const parmas = {
    pair_id: 0,
    receiver: "tz1.../KT1...",
};
const dexCore = await tezos.contract.at(dexCoreAddress);
const operation = await dexCore.methodsObject.claim_interface_tez_fee(parmas).send();

await operation.confirmation();
```

{% endtab %}
{% endtabs %}

### Errors

* `108` - pair (pool) with the specified `token_id` not listed.
* `113` - a [Bucket](/smart-contracts/dex-2.0/bucket-contract.md) contract not found (not TOK/TEZ LP pair).
* `136` - reentrancy.
* `409` - TEZ tokens receiver contract not found (not user account or contract doesn't have a `default` entrypoint).
* `412` - non payable entrypoint (can't accept TEZ tokens during call of an entrypoint).


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