我無法在set express checkoput中設置項目摘要。 L_NAME0 = A引起的錯誤Paypal Setexpresscheckout項目描述Grails
def strUsername = "***"
def strPassword = "***"
def strSignature = "***"
def strCredentials = "USER=" + strUsername + "&PWD=" + strPassword + "&SIGNATURE=" + strSignature
def strNVPSandboxServer = "https://api-3t.sandbox.paypal.com/nvp";
def user = session.userId +","+amt + "," + receiver + "," + address + "," + opt
def successUrl = '***
def cancelUrl = '***'
def strAPIVersion = "56.0"
def strNVP = strCredentials + "&METHOD=SetExpressCheckout&AMT=" + totalamount +"&PAYMENTACTION=Sale&RETURNURL="+ successUrl+"&CANCELURL="+ cancelUrl +"&CURRENCYCODE=SGD&ITEMAMT="+totalamount+"&L_NAME0=OHN&VERSION=" + strAPIVersion
如何發送折扣爲setexpresscheckout API –