# Add To Batch

When adding to a batch, a few things need to be kept in mind:

* When a new transaction is added, a vault transaction will be initialized with this method, and the batch's local index will be incremented
* The `batchIndex` field refers to the global index of the batch account (like any other transaction), while `transactionIndex` refers to the batch's inner index for the transaction being initialized (will start at 1 for the first transaction)

## Example

```typescript
import * as multisig from "@sqds/multisig";
import { Connection, PublicKey } from "@solana/web3.js"

async function main(member: PublicKey) {
    // Cluster Connection
    const connection = new Connection("<your rpc url>");
    
    // If you've saved your createKey, you can define it as a static PublicKey
    const createKey = new PublicKey("<your createkey>")
    
    // Derive the multisig PDA
    const [multisigPda] = multisig.getMultisigPda({
        createKey,
    });
    // or
    // const multisigPda = new PublicKey("<your multisig key>");
    
    // Get deserialized multisig account info
    const multisigInfo = await multisig.accounts.Multisig.fromAccountAddress(
      connection,
      multisigPda
    );

    // Get the current transaction index
    const transactionIndex = Number(multisigInfo.transactionIndex);
    // or, if this is tied to your first transaction
    // const transactionIndex = 1n;
    
    const instruction = SystemProgram.transfer({
        fromPubkey: vaultPda,
        toPubkey: creator.publicKey,
        lamports: 1,
    });
      // This message contains the instructions that the transaction is going to execute
    const transferMessage = new TransactionMessage({
        payerKey: vaultPda,
        recentBlockhash: (await connection.getLatestBlockhash()).blockhash,
        instructions: [instruction],
    });
    
    // Add transaction to the batch
    const batchAddIx = await multisig.instructions.batchAddTransaction({
        // Index of the batch globally, like any other transaction
        batchIndex: BigInt(newTransactionIndex),
        multisigPda,
        vaultIndex: 0,
        transactionMessage: transferMessage,
        // Index of the transaction inside of the batch! Not globally. Starts at 1
        transactionIndex: 1,
        ephemeralSigners: 0,
        member: creator,
    });
}
```

### Notes

* A Vault Transaction is initialized when you add to a batch
* `batchIndex` field refers to a global index, while `transactionIndex` refers to the batch's inner index


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