我正在尝试使用paypal和nodejs实现支付。到目前为止，我使用paypal-rest-sdk来处理API调用。我写了一个代码，我得到信用卡信息，然后将它们转移到paypal，但我得到了一个代号为PAYEE_ACCOUNT_INVALID的400 Response Code。似乎有很多这样的问题，但没有一个解决方案正确。
在这种情况下，原因是什么？这是我发送的json：

// Construct a PayPal payment request
  const createPaymentJson = {
    intent: 'sale',
    payer: {

      payment_method: 'credit_card',

      funding_instruments: [
        {
          credit_card: {
            number: numericCardNumber, // Use the numeric card number without spaces
            type: "mastercard", // Card type (e.g., visa, mastercard), paymentData.cardType
            expire_month: paymentData.expiry.split(' / ')[0],
            expire_year: '20' + paymentData.expiry.split(' / ')[1], // Properly format the year
            cvv2: paymentData.cvv, // CVV code
          },
        },
      ],
    },

    
    
    transactions: [
      {
        amount: {
          total: paymentData.amount, // Extract the amount from the request body
          currency: paymentData.currency, // Extract the currency from the request body
        },
        description: paymentData.description, // Extract the description from the request body
      },
    ],

    redirect_urls: {
      return_url: process.env.PAYPAL_RETURN_URL,
      cancel_url: process.env.PAYPAL_CANCEL_URL,
    },

  };