Shopping Cart Contents missing Transaction details not shown on Paypal Express Checkout

I'm using ActiveMerchantI'm trying to Integrate PayPal using express checkout and Adaptive Payment. In the Adaptive Payment I was able to view Shopping Cart Contents as below . My code was like this which works as expected.

 def adaptive_checkout

    listing = Listing.find(session[:listing_id].to_f)


    total_amount_in_cents = listing.price_cents

    service_charge_rate = 5 #in percentage 5%

    service_charge_in_cents = total_amount_in_cents * service_charge_rate / 100

    service_charge_in_dollor = service_charge_in_cents / 100.00 # this will be for secondary user (Admin of the system)

    total_amount_in_dollar = total_amount_in_cents / 100.00 # this will be for primary receiver

    seller_email = PaypalAccount.where(person_id: listing.author_id).last.email # This is the Primary receiver

    system_admin_email = PaypalAccount.where(active: true)
                             .where("paypal_accounts.community_id IS NOT NULL && paypal_accounts.person_id IS NULL")
                             .first.email # This is the Secondary receiver


    recipients = [
        {
            email: seller_email,
            amount: total_amount_in_dollar ,
            primary: true
        },

        {
            email: system_admin_email,
            amount: service_charge_in_dollor,
            primary: false
        }
    ]

    response = ADAPTIVE_GATEWAY.setup_purchase(
        action_type: "CREATE",
        return_url: "http://esignature.lvh.me:3000/en/transactions/status",
        cancel_url: "http://esignature.lvh.me:3000/",
        ipn_notification_url: "http://0dbf7871.ngrok.io/en/transactions/notification",
        receiver_list: recipients
    )


    ADAPTIVE_GATEWAY.set_payment_options(

        pay_key: response["payKey"],
        receiver_options: [
            {
                description: "Your purchase of #{listing.title}",
                invoice_data: {
                    item: [
                        {
                            name: listing.title,
                            item_count: 1,
                            item_price: total_amount_in_dollar,
                            price: total_amount_in_dollar
                        }
                    ]
                },
                receiver: {email: seller_email}
            },
            {
                description: "Service charge for purchase of #{listing.title} ",
                invoice_data: {
                    item: [
                        {
                            name: "Service charge for purchase of #{listing.title}",
                            item_count: 1,
                            item_price: service_charge_in_dollor,
                            price: service_charge_in_dollor
                        }
                    ]
                },
                receiver: {email: system_admin_email}
            }
        ]
    )



    # For redirecting the customer to the actual paypal site to finish the payment.
    redirect_to (ADAPTIVE_GATEWAY.redirect_url_for(response["payKey"]))
  end

But using express_checkout, I can't see my shopping cart Contents in transaction details

however during the transaction, item details appears, For the express checkout my code is like this

def express_checkout

    listing = Listing.find(session[:listing_id].to_f)

    response = EXPRESS_GATEWAY.setup_purchase(session[:amount].to_f,
                                              ip: request.remote_ip,
                                              return_url: "http://esignature.lvh.me:3000/en/transactions/status",
                                              cancel_return_url: "http://esignature.lvh.me:3000/",
                                              currency: "USD",
                                              allow_guest_checkout: true,
                                              items: [{name: listing.title, description: listing.description, quantity: session[:number_of_days], amount: listing.price_cents},
                                                      {name: "Service Charge", amount: session[:service_charge]}
                                              ]
    )

    redirect_to EXPRESS_GATEWAY.redirect_url_for(response.token)

  end

  def status
    if (params[:token].present? && params[:PayerID].present?)
      token = params[:token]
      @response = EXPRESS_GATEWAY.details_for(token).params
      express_purchase_options = {
          :ip => request.remote_ip,
          :token => params[:token],
          :payer_id => params[:PayerID]
      }

      response = EXPRESS_GATEWAY.purchase(session[:amount].to_f, express_purchase_options)


      if response.message == "Success"
        listing = Listing.find(session[:listing_id].to_f)
        BookingInfo.create!(listing_id: listing.id, start_on: session[:start_date].to_date, end_on: session[:end_date].to_date)
        render 'status'
      else
        render 'status_error'
      end
      reset_session_params
    else
      reset_session_params
      redirect_to homepage_without_locale_path
    end

  end

I tried to use set_payment_options method but raise method missing error. Is there any way other way to attach Item details on express checkout.

Are you including the line item details in the DoExpressCheckout call as well? If you are only sending them in the SetExpressCheckout call, they would show in the checkout screen as listed above, but if not included in the DoExpressCheckout call, they would not show in the transaction details.

https://github.com/activemerchant/active_merchant/issues/1912