# BuildTransaction

### Description

Transforms a generic transaction request into a blockchain-specific transaction with all necessary parameters populated for the target network.

**What this endpoint does:**

* Validates transaction data against the specified blockchain network
* Converts generic amounts to blockchain-native units (e.g., 0.1 SUI → 100000000 MIST)
* Calculates and populates network-specific parameters (gas price, gas budget, nonce)
* Transforms generic transaction types to chain-specific types (TRANSFER → SUI\_TRANSFER)
* Returns a structured transaction request ready for confirmation and execution

**Supported transaction types:**

* **Native transfers**:\ Send blockchain's native currency (ETH, SUI, MATIC, etc.)
* **Token transfers**:\ Send ERC-20 or equivalent tokens
* **NFT transfers**:\ Transfer ERC-721/ERC-1155 or equivalent NFTs
* **Contract execution**:\ Call smart contract functions
* **Multi-transfers**:\ Batch multiple operations (Hedera only)

{% code overflow="wrap" %}

```csharp
public static VyTask<VyTransactionRequestBase> BuildTransaction(VyBuildTransactionRequestBase reqParams)
```

{% endcode %}

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**Parameters**

| reqParams | [VyBuildTransactionRequestBase](https://sdk.venly.io/sdk-reference/c-sdk-v3/object-references/wallet/vybuildtransactionrequestbase) | Request data for the operation |
| --------- | ----------------------------------------------------------------------------------------------------------------------------------- | ------------------------------ |

**Returns**

VyTask<[VyTransactionRequestBase](https://sdk.venly.io/sdk-reference/c-sdk-v3/object-references/wallet/vytransactionrequestbase)>\
Transaction prepared for a specific chain successfully.
{% endtab %}
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