> ## Documentation Index
> Fetch the complete documentation index at: https://gateway-draft.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Updating a PDA

You can update a PDA by using the `updatePDA` mutation. Only the issuer of a PDA can update it. You would need the PDA's `id` and then the just pass the fields you want to update.

```graphql
# Query
mutation updatePDA {
  updatePDA(
    input: {
      id: "f34cdbae-7e0b-4527-bb97-08fd0e74effe"
      title: "Update Test 2"
      claim: {
        handleName: "@gateway_xyz" # string
        favoritePosts: ["more awesome"] # array
      }
    }
  ) {
    id
    arweaveUrl
    dataAsset {
      title
      claim
    }
  }
}
```

You can find an ID of a PDA via 2 ways:

<ul>
  <li>
    Calling the <code>getPDAs</code> query
  </li>

  <li>Finding it in the Data Assets tab in the Gateway Dashboard</li>
</ul>

<RequestExample>
  ```ts Node.js
  const axios = require("axios");
  let data = JSON.stringify({
    query: `YOUR_GRAPHQL_QUERY_HERE`,
    variables: {},
  });

  let config = {
    method: "post",
    maxBodyLength: Infinity,
    url: "https://sandbox.protocol.mygateway.xyz/graphql",
    headers: {
      "X-Api-Key": "<YOUR_API_KEY>",
      Authorization: "Bearer <YOUR_AUTHENTICATION_TOKEN>",
      "Content-Type": "application/json",
    },
    data: data,
  };

  axios
    .request(config)
    .then((response) => {
      console.log(JSON.stringify(response.data));
    })
    .catch((error) => {
      console.log(error);
    });
  ```
</RequestExample>

<ResponseExample>
  ```json
  {
    "data": {
      "updatePDA": {
        "id": "f34cdbae-7e0b-4527-bb97-08fd0e74effe",
        "arweaveUrl": "https://arweave.net/7BS2Ssq-bbNv3vxpr3zBqzl5AJpf_qnhfhi2-w76rVQ",
        "dataAsset": {
          "title": "Update Test 2",
          "claim": {
            "handleName": "@gateway_xyz",
            "favoritePosts": ["more awesome"]
          }
        }
      }
    }
  }
  ```
</ResponseExample>