This method marks the posted intra-organisation funds transfer as reviewed in readiness of final approval and this is applicable for 6-eye principle workflow. For payload explanations for both request and response, click here 
using OneKhusa.SDK;
using OneKhusa.SDK.Models.Transactions.SingleDisbursements.Shared;

//code omitted for brevity

OneKhusaResponse<ReviewPayoutResponse> response = await client
    .Transactions
    .SingleDisbursements
    .ReviewIntraTransferAsync(new ReviewPayoutRequest
    {
        TransactionReferenceNumber = "260219YXF882",
        MerchantAccountNumber = 12345678,
        ActionedBy = "joe.doe@example.com"
    });

if (response is { IsSuccess: true, Data: not null })
{
    Console.WriteLine($"""
        MerchantAccountNumber: {response.Data.MerchantAccountNumber};
        TransactionReferenceNumber: {response.Data.TransactionReferenceNumber};
        ResponseCode: {response.Data.ResponseCode}
        """);
    return;
}
//it means an error has occurred: RFC7807 compliant error object
Console.WriteLine($"""
        Type: {response.Error?.Type};
        Title: {response.Error?.Title};
        Detail: {response.Error?.Detail};
        ErrorCode: {response.Error?.ErrorCode};
        Status: {response.Error?.Status};
        Instance: {response.Error?.Instance};
        Errors: {string.Join(";", response.Error?.Errors ?? [])}
""");
Console.ReadLine();
Note: This method accepts custom idempotency key generated by your system. By default, if not specified, it will create one on your behalf.