# Deposits to Meridian

A deposit moves supported collateral from a wallet into a Meridian subaccount.

## Before You Deposit

1. Connect the wallet that owns the collateral.
2. Select the correct Meridian environment and network.
3. Confirm that the token is enabled for deposit.
4. Keep enough of the network gas token to submit the transaction.

The available token and minimum amount can change. The application shows the current configuration.

On Robinhood Chain testnet, use the [Testnet Faucet](/protocol-reference/testnet-faucet) to claim test USD and wrap it into MeridianUSD before following the deposit flow. Testnet assets have no monetary value.

## Deposit Flow

1. Open Meridian and connect the wallet.
2. Select **Deposit**.
3. Select a supported token and destination subaccount.
4. Enter the amount.
5. Approve the token if approval is necessary.
6. Confirm the deposit transaction.
7. Wait for the onchain confirmation and Meridian processing.

The first valid deposit can create and register the first subaccount for the wallet.

:::warning
Do not submit the same deposit again while the first transaction is pending. First check the transaction hash and application status.
:::

## Cross-Chain Deposits

Use a cross-chain route only when the application lists that source chain. A route requires a configured bridge and supported token path.

Robinhood Chain testnet does not currently have a configured LayerZero OFT route for Meridian USD. Make a same-chain deposit in that environment.

## Deposit Does Not Appear

1. Check the transaction on the source-chain explorer.
2. Confirm that the transaction called the Meridian exchange deposit function.
3. Confirm the destination subaccount name.
4. Wait for Meridian to process the confirmed event.
5. Contact support if the transaction succeeded and the balance does not update.

Do not send a token directly to the exchange address. A direct transfer does not specify a subaccount.

See [Token Transfers](/developer-guides/trading-api/token-transfers) for contract and API details.