> ## Documentation Index
> Fetch the complete documentation index at: https://docs.validationcloud.io/llms.txt
> Use this file to discover all available pages before exploring further.

# TriggerSmartContract

Returns TransactionExtention, which contains the unsigned Transaction.

This method will use `30` [Compute Units](/nodeapi/about/billing).

***

**Note:**\
[ABI rules](https://solidity.readthedocs.io/en/latest/abi-spec.html#examples)\
Example: [Parameter and return value encoding and decoding](https://developers.tron.network/docs/parameter-encoding-and-decoding)

## **Parameters**

* `owner_address` - String - Required - Address that triggers the contract, converted to a hex string
* `contract_address` - String - Required - Contract address, converted to a hex string
* `function_selector` - String - Function call, must not be left blank
* `parameter` - String - Parameter encoding needs to be in accordance with the ABI rules, the rules are more complicated, users can use the ethers library to encode,For details, please refer to the document-Guide-Smart Contract-Best Practice-Parameter Encoding and Decoding.
* `data` - String - The data for interacting with smart contracts, including the contract function and parameters. You can choose to use this field, or you can choose to use function\_selector and parameter for contract interaction. When both of data and function\_selector exist, function\_selector is preferred
* `fee_limit` - int32 - Required - Maximum TRX consumption, measured in SUN (1 TRX = 1,000,000 SUN).
* `call_value` - int64 - Amount of TRX transferred with this transaction, measured in SUN (1 TRX = 1,000,000 SUN).
* `call_token_value` - int64 - Amount of TRC10 token transferred with this transaction
* `token_id` - int64 - TRC10 token id
* `permission_id` - int32 - Optional, for multi-signature
* `visible` - boolean - Optional. Specifies whether the address is in Base58 format (default: false)

## **Returns**

Transaction object - JSON object: Unsigned transaction, please refer to the [Transaction](https://developers.tron.network/docs/tron-protocol-transaction) chapter for the fields contained in it. Since the transaction type is `TriggerSmartContract`, the fields contained in `raw_data.contract[0].parameter.value` in the transaction are as follows:

| Field | Type | Description |
| - | - | - |
| owner\_address | string | Account address |
| contract\_address | string | Contract address |
| call\_value | int64 | The amount of TRX passed into the contract |
| data | string | Operating parameters |
| call\_token\_value | int64 | The amount of TRC-10 transferred into the contract |
| token\_id | int64 | TRC-10 token id |

```json theme={"theme":{"light":"github-light","dark":"github-dark-default"}}
// Result
{
  "result": {
    "result": true
  },
  "transaction": {
    "visible": true,
    "txID": "22dccb42d0e17491de92d1bebc994b5f8dbce17c5214bd805d903f04fa0db55f",
    "raw_data": {
      "contract": [
        {
          "parameter": {
            "value": {
              "data": "a9059cbb00000000000000000000004115208ef33a926919ed270e2fa61367b2da3753da0000000000000000000000000000000000000000000000000000000000000032",
              "owner_address": "TZ4UXDV5ZhNW7fb2AMSbgfAEZ7hWsnYS2g",
              "contract_address": "TG3XXyExBkPp9nzdajDZsozEu4BkaSJozs"
            },
            "type_url": "type.googleapis.com/protocol.TriggerSmartContract"
          },
          "type": "TriggerSmartContract"
        }
      ],
      "ref_block_bytes": "5304",
      "ref_block_hash": "9f7028275bd30605",
      "expiration": 1757410986000,
      "fee_limit": 1000000000,
      "timestamp": 1757410926876
    },
    "raw_data_hex": "0a02530422089f7028275bd30605409090eeee92335aae01081f12a9010a31747970652e676f6f676c65617069732e636f6d2f70726f746f636f6c2e54726967676572536d617274436f6e747261637412740a1541fd49eda0f23ff7ec1d03b52c3a45991c24cd440e12154142a1e39aefa49290f2b3f9ed688d7cecf86cd6e02244a9059cbb00000000000000000000004115208ef33a926919ed270e2fa61367b2da3753da0000000000000000000000000000000000000000000000000000000000000032709cc2eaee923390018094ebdc03"
  }
}
```

<CodeGroup>
  ```bash title="mainnet" theme={"theme":{"light":"github-light","dark":"github-dark-default"}}
  curl https://mainnet.tron.validationcloud.io/v1/<YOUR_API_KEY_HERE>/wallet/triggersmartcontract \
      -X POST \
      -H "Content-Type: application/json" \
      -d '
  {
    "owner_address": "TZ4UXDV5ZhNW7fb2AMSbgfAEZ7hWsnYS2g",
    "contract_address": "TG3XXyExBkPp9nzdajDZsozEu4BkaSJozs",
    "function_selector": "transfer(address,uint256)",
    "parameter": "00000000000000000000004115208EF33A926919ED270E2FA61367B2DA3753DA0000000000000000000000000000000000000000000000000000000000000032",
    "fee_limit": 1000000000,
    "call_value": 0,
    "visible": true
  }
  '
  ```
</CodeGroup>


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