Pending transaction between funding source to balance

Hello
am facing trouble to transfer amount from funding source to balance.
After 7 days of transaction still it showing pending .
Can anyone help to to sort out this problem . am pasting my code below for transfer funding source to balance.

var transferRequest = {
_links: {
source: {
href:
config.DWOLLA.BASE_URL + “funding-sources/” + req.body.source,
},
destination: {
href:
config.DWOLLA.BASE_URL + “funding-sources/” + req.body.destination,
},
},
amount: {
currency: “USD”,
value: parseFloat(req.body.amount),
},
clearing: {
source: “next-available” // bank to balance
}
};

    try {
        dwollaClient.auth.client()
            .then(async (appToken) => {
                appToken.post('transfers', transferRequest).then(async function (result) {
                    console.log('result :', result.headers.get("location"))

                    res.status(200).json({
                        success: 1,
                        error: 0,
                        message: "Tranfer successfully. ",
                        data: result.headers.get("location")
                    });
                }).catch((er1) => {
                    console.log('error', er1)
                    res.status(400).json({
                        success: 0,
                        error: 1,
                        message: "Cannot Process your transfer request. please try after sometime. ",
                        errors: er1
                    });
                });
            })


    } catch (e) {
        console.log(e)
        res.status(400).json({
            success: 0,
            error: 1,
            message: "Cannot Process your transfer request. please try after sometime. ",
            errors: e
        });
    }

Hi @Sumit_Paul , Is this in Dwolla’s Sandbox or Production environment? If the transaction was created in the Sandbox environment you’ll want to utilize the Sandbox simulations functionality to simulate the outcome of the transaction. No real funds move in Sandbox so a pending transfer will stay pending indefinitely unless you trigger the outcome.