# update\_operators

An entrypoint works exactly like FA2 ***update\_operators*** entrypoint according to [TZIP-012](https://gitlab.com/tezos/tzip/-/blob/master/proposals/tzip-12/tzip-12.md).

### Call parameters

```pascaligo
type token_id_t         is nat

type operator_t         is [@layout:comb] record [
  owner                   : address;
  operator                : address;
  token_id                : token_id_t;
]

type update_operator_t  is
| Add_operator            of operator_t
| Remove_operator         of operator_t

type update_operators_t is list(update_operator_t)
```

<table><thead><tr><th width="150">Field</th><th>Type</th><th>Description</th></tr></thead><tbody><tr><td>owner</td><td>address</td><td>Owner of tokens</td></tr><tr><td>operator</td><td>address</td><td>Operator of tokens</td></tr><tr><td>token_id</td><td>token_id_t</td><td>Token ID</td></tr></tbody></table>

### Usage

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

```javascript
const dexCoreAddress = "KT1...";
const params = [
    {
        add_operator: {
            owner: "tz1.../KT1...",
            operator: "tz1.../KT1...",
            token_id: 0,
        },
    },
    {
        remove_operator: {
            owner: "tz1.../KT1...",
            operator: "tz1.../KT1...",
            token_id: 1,
         },
     },
     ...
];
const dexCore = await tezos.contract.at(dexCoreAddress);
const operation = await dexCore.methods.update_operators(params).send();

await operation.confirmation();
```

{% endtab %}
{% endtabs %}

### Errors

* `412` - non payable entrypoint (can't accept TEZ tokens during call of an entrypoint).
* `FA2_TOKEN_UNDEFINED` - token with `token_id` doesn't exist.
* `FA2_NOT_OWNER` - `sender` is not `owner` of account.


---

# 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://docs.quipuswap.com/smart-contracts/dex-2.0/dexcore-contract/entrypoints-overview/fa2-entrypoints/update_operators.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.