• Tizen.TV.Service.Billing Namespace

• Tizen.TV.Service.Sso Namespace

• Implementing the Purchase Process for Web applications

• Samsung Checkout DPI Portal Guide

• Samsung Checkout DPI Portal

• Samsung Checkout .NET Application

• Samsung Checkout Web Application

Implement a billing system for in-app purchases in your application, by using Samsung Checkout through the DPI service APIs and the purchase API and GUI.

Prerequisites

To implement in-app purchases:

1. Before you start implementing Samsung Checkout in your application, start registering your application at the Samsung Apps TV Seller Office. You do not need to complete the registration with your source code at this point. To be able to use the DPI portal, you need to proceed to the second step of the App Registration Page and set the "Billing" field to "Use" and the "Samsung Checkout on TV" field to "Yes". You can save the registration at this point and return to it later when your source code is complete. For more information, see the Samsung Checkout DPI Portal guide.

   Note

   To manage your product for billing, go to the Samsung Checkout DPI Portal.

2. Install the following NuGet packages:

   • Tizen.TV
   • Tizen.TV.Service.Billing
   • Tizen.TV.Service.Sso

3. To access the device and user information, and use the methods of the Tizen.TV.Service.Billing and Tizen.TV.Service.Sso namespaces, the application has to request permission by adding the following privileges to the "tizen-manifest.xml" file:

   <tizen:privilege name="http://developer.samsung.com/privilege/sso.partner"/>
   <tizen:privilege name="http://developer.samsung.com/privilege/productinfo"/>
   <tizen:privilege name="http://developer.samsung.com/privilege/billing"/>
   

4. Initialize the required variables:

   1. Retrieve the User ID:

      using Tizen.TV.Service.Sso;
      string loginUid = Sso.GetLoginUid(); // Get UID value from TV
      

   2. Retrieve the country code:

      using Tizen.TV;
      string country = Environment.SmartHubConfig.Country;
      

   3. Retrieve the server type:

      using Tizen.TV;
      SmartHubConfig.ServerType tvServerType = Environment.SmartHubConfig.Server;
      

   4. Set the service environment:

      using Tizen.TV;
      
      SmartHubConfig.ServerType tvServerType = Environment.SmartHubConfig.Server;
      BillingRequestServerType serverType;
      string securityKey;
      
      switch(tvServerType)
      {
        case SmartHubConfig.ServerType.Operating:
          serverType = BillingRequestServerType.Prd;
          securityKey = "***********";
          break;
        case SmartHubConfig.ServerType.Developement:
          serverType = BillingRequestServerType.Dev;
          securityKey = "***********";
          break;
      }
      

DPI Service APIs

The Tizen.TV.Service.Billing namespace enables you to access the APIs provided by the DPI service, to manage products and sales.

Generating Check Values

The check value is used by the DPI service to verify Purchase List and Products List API requests. It is a Base64 hash generated by applying the HMAC SHA256 algorithm on a concatenated string of parameters using the DPI security key.

The application can also use the check value to verify that API response data from the DPI server is legitimate. To ensure the data integrity of requests and responses in real time, generate and verify the check value for API requests and responses during runtime.

Note

The DPI security key is used only by Samsung Smart TV applications for Samsung Checkout features. Do not expose this key. You can use a key management server for greater security.

To generate the check value, the following 2 items are used as parameters:

• Concatenation of the required parameters
  For example, "12345"+"123"+"US"+"2"+"1" is concatenated to "12345123US21".
  The required parameters vary depending on the API.
• DPI security key
  The DPI security key is issued at the DPI portal.

To generate the HMAC SHA256 hash:

using System;
using System.Security.Cryptography;
private string GetCheckValue(string strMsg, string strKey)
{
  var encoding = new System.Text.ASCIIEncoding();
  byte[] byteKey = encoding.GetBytes(strKey);
  byte[] dataToHmac = encoding.GetBytes(strMsg);

  HMACSHA256 hmac = new HMACSHA256(byteKey);
  return Convert.ToBase64String(hmac.ComputeHash(dataToHmac));
}

Requesting User Purchases

The Purchase List API requests the list of purchased items for a specific user, usually the currently logged-in user. The API response identifies whether purchased products have been applied or have been refunded.

Note

For subscription products, the default value of the "AppliedStatus" parameter is "true", but the "CancelStatus" parameter does not indicate the refund status in purchase history. Instead, it indicates the cancellation status for the next subscription cycle. The "SubsStatus" and "SubsEndTime" parameters detail the subscription expiration status.

To call the Purchase List API, use the GetPurchaseList() method:

using System;
using System.Security.Cryptography;
using Tizen.TV.Service.Billing;
using Tizen.TV.Service.Sso;
using Tizen.TV;

public void Request_Purchase_list()
{
  BillingPlugin pIBilling = new BillingPlugin();

  pIBilling.RequestAPIEventHandler += new BillingRequestAPICallbackEventHandler(RequestPurchaseListCallbackEvent);

  string strAppId = "**********"; // Your application ID
  string strUniqueCustomID = Sso.GetLoginUid();
  string strCountryCode = Environment.SmartHubConfig.Country;
  string strItemType = "2";
  string strSecurityKey = "**********"; // Your security key issued by DPI portal
  int iPageNumber = 1;

  string strCheckValue = GetCheckValue(strAppId + strUniqueCustomID + strCountryCode + strItemType + iPageNumber, strSecurityKey);

  bool bRet = pIBilling.GetPurchaseList(strAppId, strUniqueCustomID, strCountryCode, iPageNumber, strCheckValue, servertype);
  if (bRet)
  {
    // API call success
  }
  else
  {
    // API call fail
  }
}

private string GetCheckValue(string strMsg, string strKey)
{
  var encoding = new System.Text.ASCIIEncoding();
  byte[] byteKey = encoding.GetBytes(strKey);
  byte[] dataToHmac = encoding.GetBytes(strMsg);

  HMACSHA256 hmac = new HMACSHA256(byteKey);
  return Convert.ToBase64String(hmac.ComputeHash(dataToHmac));
}

private void RequestPurchaseListCallbackEvent(object sender, BillingRequestAPICallbackEventArgs e)
{
  // Do something
}

The following tables describe the Purchase List API parameters. The response data is in JSON format.

• Purchase List API request parameters:

  Table 1. Purchase List API request parameters

  Parameter	Type	Mandatory	Description
  "AppID"	String	True	Application ID
  "CustomID"			Unique Customer ID Same value as the "OrderCustomID" parameter for the BuyItem() method.
  "CountryCode"			Country code The country code must be retrieved from the TV.
  "PageNumber"	Number		Requested page number Range: 1~N Each purchase record page has up to 100 entries. To receive the complete purchase record, post Purchase List API requests while increasing the "PageNumber" value, until "EOF" is returned in the "CPResult" parameter.
  "CheckValue"	String		Security check value Required parameters: "AppID" + "CustomID" + "CountryCode" + "ItemType" + "PageNumber"
  "ServerType"			Possible values: "DEV": Staging zone "PRD": Operating zone

• Purchase List API response parameters:

  Table 2. Purchase List API response parameters

  Parameter			Type	Mandatory	Description
  "CPStatus"			String	True	Result code: “100000”: Success “ErrorCode”: Failure
  "CPResult"				False	Result message: "EOF": Last page of the purchase history "hasNext:TRUE": Purchase history has further pages Other message corresponding to the "CPStatus" error code
  "TotalCount"			Number	True	Total number of invoices Sum of all purchase history pages, or sum of purchase history in the specified time period.
  "CheckValue"			String		Security check value Required parameters: "CPStatus" + "CPResult" + "TotalCount" + "InvoiceDetails[0].ItemID" + … + "InvoiceDetails[TotalCount].ItemID"
  "InvoiceDetails"			JSON	False	Invoice information
  	"Seq"		Number	True	Sequence number Range: 1 ~ TotalCount
  	"InvoiceID"		String		Invoice ID
  	"ItemID"				Product ID
  	"ItemTitle"				Product name
  	"ItemType"		Number		Product type: "1": CONSUMABLE "2": NON-CONSUMABLE "3": LIMITED-PERIOD "4": SUBSCRIPTION The response "ItemType" value differs from the request "ItemType" value. The response value contains more detail.
  	"OrderTime"		String		Payment time, in 14-digit UTC time, for example, "20140314175900"
  	"Period"		Number	False	Limited period product duration, in minutes
  	"Price"			True	Product price, in "xxxx.yy" format
  	"OrderCurrencyID"		String		Currency code
  	"CancelStatus"		Boolean		Cancellation status: "true": Sale canceled "false": Sale ongoing For subscription products, indicates the cancellation status for the next subscription cycle.
  	"AppliedStatus"				Product application status: "true": Applied "false": Not applied For subscription products, the default value is "true".
  	"AppliedTime"		String	False	Time product applied, in 14-digit UTC time
  	"LimitEndTime"				Limited period product end time, in 14-digit UTC time For limited period products only. "LimitEndTime" = "AppliedTime" + "Period"
  	"RemainTime"				Limited period product time remaining, in seconds For limited period products only. "RemainTime" = "LimitEndTime" – request time
  	"SubscriptionInfo"		JSON		Subscription information  Mandatory for subscription products.
  		"SubscriptionId"	String	True	Subscription ID
  		"SubsStartTime"			Subscription start time, in 14-digit UTC time
  		"SubsEndTime"			Subscription expiry time, in 14-digit UTC time
  		"SubsStatus"			Subscription status: "00": Active "01": Subscription expired "02": Canceled by buyer "03": Canceled for payment failure "04": Canceled by CP "05": Canceled by admin

Requesting Products for Sale

The Products List API requests product information from the DPI server. When the API is in "show" status, it returns the information for the products on sale. This API is generally used to generate a list of buyable products in the application.

To call the Products List API, use the GetProductsList() method:

using System;
using System.Security.Cryptography;
using Tizen.TV.Service.Billing;
using Tizen.TV;
public void Request_product_list()
{
  BillingPlugin pIBilling = new BillingPlugin();

  pIBilling.RequestAPIEventHandler += new BillingRequestAPICallbackEventHandler(RequestProductListCallbackEvent);

  string strAppId = "**********"; // Your application ID
  string strCountryCode = Environment.SmartHubConfig.Country;
  string strSecurityKey = "**********"; // Your security key issued by DPI portal
  string strCheckValue = GetCheckValue(strAppId + strCountryCode, strSecurityKey);

  int iPageSize = 100;
  int iPageNumber = 1;

  bool bRet = pIBilling.GetProductsList(strAppId, strCountryCode, iPageSize, iPageNumber, strCheckValue, servertype);
  if (bRet)
  {
    // API call success
  }
  else
  {
    // API call fail
  }
}

private string GetCheckValue(string strMsg, string strKey)
{
  var encoding = new System.Text.ASCIIEncoding();
  byte[] byteKey = encoding.GetBytes(strKey);
  byte[] dataToHmac = encoding.GetBytes(strMsg);

  HMACSHA256 hmac = new HMACSHA256(byteKey);
  return Convert.ToBase64String(hmac.ComputeHash(dataToHmac));
}

private void RequestProductListCallbackEvent(object sender, BillingRequestAPICallbackEventArgs e)
{
  // Do something after parsing e.Result
  JObject ProductListObj = JObject.Parse(e.Result);
  JArray jArray = JArray.Parse(ProductListObj.GetValue("ItemDetails").ToString());
  ProductInfos = jArray.Select(p => new ProductInfo
  {
    ItemType = (string)p["ItemType"],
    Price = (string)p["Price"],
    ItemTitle = (string)p["ItemTitle"],
    ItemID = (string)p["ItemID"],
    CurrencyID = (string)p["CurrencyID"]
  }).ToList();
}

The following tables describe the Products List API parameters. The response data is in JSON format.

• Products List API request parameters:

  Table 3. Products List API request parameters

  Parameter	Type	Mandatory	Description
  "AppID"	String	True	Application ID
  "CountryCode"			Country code The country code must be retrieved from the TV.
  "PageSize"	Number	False	Requested page size Range: 1~N (maximum 100) Number of products retrieved per page.
  "PageNumber"			Requested page number Range: 1~N Each purchase record page has a number of entries equal to the "PageSize" value. To receive the complete purchase record, post Purchase List API requests while increasing the "PageNumber" value, until "EOF" is returned in the "CPResult" parameter.
  "CheckValue"	String	True	Security check value Required parameters: "AppID" + "CountryCode"
  "ServerType"			Possible values: "DEV": Staging zone "PRD": Operating zone

• Products List API response parameters:

  Table 4. Products List API response parameters

  Parameter			Type	Mandatory	Description
  "CPStatus"			String	True	Result code: “100000”: Success “ErrorCode”: Failure
  "CPResult"				False	Result message: "EOF": Last page of the purchase history "hasNext:TRUE": Purchase history has further pages Other message corresponding to the "CPStatus" error code
  "TotalCount"			Number	True	Total number of invoices Sum of all purchase history pages, or sum of purchase history in the specified time period.
  "CheckValue"			String		Security check value Required parameters: "CPStatus" + "CPResult" + "TotalCount" + "InvoiceDetails[0].ItemID" + … + "InvoiceDetails[TotalCount].ItemID"
  "ItemDetails"			JSON	False	Invoice information
  	"Seq"		Number	True	Sequence number Range: 1 ~ TotalCount
  	"ItemID"		String		Product ID
  	"ItemTitle"				Product name
  	"ItemType"		Number		Product type: "1": CONSUMABLE "2": NON-CONSUMABLE "3": LIMITED-PERIOD "4": SUBSCRIPTION
  	"Period"			False	Limited period product duration, in minutes
  	"Price"			True	Product price, in "xxxx.yy" format
  	"CurrencyID"		String		Currency code
  	"SubscriptionInfo"		JSON	False	Subscription information  Mandatory for subscription products.
  		"PaymentCyclePeriod"	String	True	Subscription payment period: "D": Days "W": Weeks "M": Months
  		"PaymentCycleFrq"	Number		Payment cycle frequency
  		"PaymentCycle"			Number of payment cycles

Verifying Purchases

The Verify Purchase API checks whether a purchase, corresponding to the requested "InvoiceID", was successful.

To call the Verify Purchase API, use the VerifyInvoice() method:

using System;
using Tizen.TV.Service.Billing;
using Tizen.TV.Service.Sso;
using Tizen.TV;

public void Request_Verify_Purchase(string strInvoiceID)
{
  BillingPlugin pIBilling = new BillingPlugin();

  pIBilling.RequestAPIEventHandler += new BillingRequestAPICallbackEventHandler(RequestVerifyInvoiceCallbackEvent);

  string strAppId = "**********"; // Your application ID
  strUniqueCustomID = Sso.GetLoginUid();
  // strInvoiceID = issued by GetPurchaseList
  string strCountryCode = Environment.SmartHubConfig.Country;

  bool bRet = pIBilling.VerifyInvoice(m_strAppId, strUniqueCustomID, strInvoiceID, strCountryCode, servertype);
  if (bRet)
  {
    // API call success
  }
  else
  {
    // API call fail
  }
}

private void RequestVerifyInvoiceCallbackEvent(object sender, BillingRequestAPICallbackEventArgs e)
{
  // Do something
}

The following tables describe the Verify Purchase API parameters. The response data is in JSON format.

• Verify Purchase API request parameters:

  Table 5. Verify Purchase API request parameters

  Parameter	Type	Mandatory	Description
  "AppID"	String	True	Application ID
  "InvoiceID"			Invoice ID
  "CustomID"			Unique Customer ID Same value as the "OrderCustomID" parameter for the BuyItem() method.
  "CountryCode"			Country code The country code must be retrieved from the TV.
  "ServerType"			Possible values: "DEV": Staging zone "PRD": Operating zone

• Verify Purchase API response parameters:

  Table 6. Verify Purchase API response parameters

  Parameter	Type	Mandatory	Description
  "CPStatus"	String	True	Result code: “100000”: Success “ErrorCode”: Failure
  "CPResult"		False	Result message: "SUCCESS" Other message corresponding to the "CPStatus" error code
  "AppID"		True	Requested application ID
  "InvoiceID"			Requested invoice ID

Applying Products

The Apply Product API supports product management to help guarantee secure sales of your products. Normally, the DPI service is notified that the purchased product has been successfully applied. The Apply Product API is used in situations where purchase result delivery to the application encounters issues and is not successful. For example, if the network connection is interrupted, the application can fail to receive the "payment complete" message, even though the payment was completed. In this situation, the product is not applied to the application. You can check for unapplied products using the "AppliedStatus" parameter of the Purchase List API response and apply the product at that time.

For subscription products, the product is considered applied at the time of purchase and the "AppliedStatus" is set to "true" by default. Consequently, it is not necessary to check whether a subscription product purchase corresponding to the requested "InvoiceID" was successful.

Note

To avoid applying the same product more than once in error, after 3 failed attempts to request the Apply Product API, wait until the network is reconnected before trying again.

To call the Apply Product API, use the ApplyInvoice() method:

using System;
using Tizen.TV.Service.Billing;
using Tizen.TV.Service.Sso;
using Tizen.TV;

public void Request_Apply_Purchase(string strInvoiceID)
{
  BillingPlugin pIBilling = new BillingPlugin();

  pIBilling.RequestAPIEventHandler += new BillingRequestAPICallbackEventHandler(RequestApplyInvoiceCallbackEvent);

  string strAppId = "**********"; // Your application ID
  string strUniqueCustomID = Sso.GetLoginUid();
  // strInvoiceID = issued by GetPurchaseList
  string strCountryCode = Environment.SmartHubConfig.Country;

  bool bRet = pIBilling.ApplyInvoice(strAppId, strUniqueCustomID, strInvoiceID, strCountryCode, servertype); if (bRet)
  {
    // API call success
  }
  else
  {
    // API call fail
  }
}

private void RequestApplyInvoiceCallbackEvent(object sender, BillingRequestAPICallbackEventArgs e)
{
  // Do something
}

The following tables describe the Apply Product API parameters. The response data is in JSON format.

• Apply Product API request parameters:

  Table 7. Apply Purchase API request parameters

  Parameter	Type	Mandatory	Description
  "AppID"	String	True	Application ID
  "InvoiceID"			Invoice ID
  "CustomID"			Unique Customer ID Same value as the "OrderCustomID" parameter for the BuyItem() method.
  "CountryCode"			Country code The country code must be retrieved from the TV.
  "ServerType"			Possible values: "DEV": Staging zone "PRD": Operating zone

• Apply Product API response parameters:

  Table 8. Apply Product API response parameters

  Parameter	Type	Mandatory	Description
  "CPStatus"	String	True	Result code: "100000": Success "ErrorCode": Failure
  "CPResult"		False	Result message: "SUCCESS" Other message corresponding to the "CPStatus" error code
  "AppliedTime"		True	Time product applied, in 14-digit UTC time, for example, "20140314175900"

Canceling Subscriptions

You can only use the Subscription Cancel API with subscription products, to request canceling the subscription. The DPI server returns the subscription expiry time and the current subscription status.

To call the Subscription Cancel API, use the CancelSubscription() method:

using System;
using Tizen.TV.Service.Billing;
using Tizen.TV.Service.Sso;
using Tizen.TV;

public void Request_Cancel_Subscription(string strSubscriptionID)
{
  BillingPlugin pIBilling = new BillingPlugin();

  pIBilling.RequestAPIEventHandler += new BillingRequestAPICallbackEventHandler(RequestCancelSubscriptionCallbackEvent);

  string strAppId = "**********"; // Your application ID
  string strUniqueCustomID = Sso.GetLoginUid();
  // strSubscriptionID = issued by GetPurchaseList
  string strCountryCode = Environment.SmartHubConfig.Country;

  bool bRet = pIBilling.CancelSubscription(strAppId, strUniqueCustomID, strSubscriptionID, strCountryCode, servertype); if (bRet)
  {
    // API call success
  }
  else
  {
    // API call fail
  }
}

private void RequestCancelSubscriptionCallbackEvent(object sender, BillingRequestAPICallbackEventArgs e)
{
  // Do something
}

The following tables describe the Subscription Cancel API parameters. The response data is in JSON format.

• Subscription Cancel API request parameters:

  Table 9. Subscription Cancel API request parameters

  Parameter	Type	Mandatory	Description
  "AppID"	String	True	Application ID
  "SubscriptionID"			Subscription ID
  "CustomID"			Unique Customer ID Same value as the "OrderCustomID" parameter for the BuyItem() method.
  "CountryCode"			Country code The country code must be retrieved from the TV.
  "ServerType"			Possible values: "DEV": Staging zone "PRD": Operating zone

• Subscription Cancel API response parameters:

  Table 10. Subscription Cancel API response parameters

  Parameter	Type	Mandatory	Description
  "CPStatus"	String	True	Result code: "100000": Success "ErrorCode": Failure
  "CPResult"		False	Result message: "SUCCESS" Other message corresponding to the "CPStatus" error code
  "InvoiceID"		True	Invoice ID
  "SubsCancelTime"		False	Time subscription canceled, in 14-digit UTC time, for example, "20140314175900"
  "SubsStatus"			Subscription status: "00": Active "01": Subscription expired "02": Canceled by buyer "03": Canceled for payment failure "04": Canceled by CP "05": Canceled by admin

DPI Result Codes

The following table lists result codes and messages that are returned by the DPI service.

For explanations of additional DPI result codes, at the DPI portal, go to "Help > Error Code".

Purchase API and GUI

When the user wants to make a purchase, authenticate the user and show the common purchase GUI with the BuyItem() method of the Tizen.TV.Service.Billing namespace.

Important

When the BuyItem() method is called, the common purchase GUI is shown in the application automatically. Do not change the purchase GUI appearance until the purchase transaction is complete and the application receives the response.

You can customize the product image in Samsung Checkout by providing the URI to an image on your own content server.

Table 12. Display your own product image

Default image	Product image

To show the common purchase GUI, call the BuyItem() method:

using System.Text;
using System.IO;
using Newtonsoft.Json;
using Tizen.TV.Service.Billing;
using Tizen.TV.Service.Sso;
using Tizen.TV;

public void Request_Buy_Item()
{
  BillingPlugin pIBilling = new BillingPlugin();

  pIBilling.BuyItemEventHandler += new BillingClientClosedEventHandler(BuyItemCallbackEvent);

  StringBuilder sb = new StringBuilder();
  StringWriter sw = new StringWriter(sb);

  string appId = "**********"; // Your application ID
  string uniqueCustomID = Sso.GetLoginUid(); // Unique customer ID
  BillingRequestServerType servertype = GetBillingServerType();

  using (JsonWriter writer = new JsonTextWriter(sw))
  {
    writer.Formatting = Formatting.Indented;
    writer.WriteStartObject();
    writer.WritePropertyName("OrderTotal");
    writer.WriteValue(price); // Issued by GetProductList
    writer.WritePropertyName("OrderItemID");
    writer.WriteValue(itemID); // Issued by GetProductList
    writer.WritePropertyName("OrderTitle");
    writer.WriteValue(itemTitle); // Issued by GetProductList
    writer.WritePropertyName("OrderCurrencyID");
    writer.WriteValue(currencyID); // Issued by GetProductList
    writer.WritePropertyName("OrderCustomID");
    writer.WriteValue(uniqueCustomID);
    writer.WriteEndObject();
  }
  bool bRet = pIBilling.BuyItem(appId, servertype, sb.ToString());
  if (bRet)
  {
    // API call success
  }
  else
  {
    // API call fail
  }
}

private void BuyItemCallbackEvent(object sender, BillingClientClosedEventArgs e)
{
  //  Do something
}

private BillingRequestServerType GetBillingServerType()
{
  var tvServerType = Environment.SmartHubConfig.Server;
  BillingRequestServerType serverType;
  switch (tvServerType)
  {
    case SmartHubConfig.ServerType.Operating:
      serverType = BillingRequestServerType.Prd;
      break;
    case SmartHubConfig.ServerType.Developement:
      serverType = BillingRequestServerType.Dev;
      break;
    default:
      serverType = BillingRequestServerType.Prd;
      break;
  }
  return serverType;
}

The BuyItem() method request and response data are in JSON format:

• BuyItem() method request parameters:

  Table 13. BuyItem() method request parameters

  Parameter		Type	Mandatory	Description
  "AppID"		String	True	Application ID
  "PaymentServer"				Possible values: "DEV": Staging zone "DUMMY": Staging zone with dummy payment "PRD": Operating zone
  "PaymentDetails"		JSON		Payment details
  	"OrderItemID"	String		Purchase item ID, for example, "DP123400000000" "ItemID" issued by the Products List API.
  	"OrderTitle"			Purchase item title "ItemTitle" issued by the Products List API. The length must not exceed 100 characters.
  	"OrderTotal"			Total purchase price "Price" issued by the Products List API. When converting the number to string type, pay attention to the unit separators.
  	"OrderCurrencyID"			Purchase currency unit "CurrencyID" issued by the Products List API.
  	"OrderID"		False	Management ID for purchases managed by third-party applications
  	"OrderCustomID"		True	Unique customer ID If a value is not specified, a unique ID is generated by Samsung Checkout.
  	"OrderItemPath"		False	Item image URI The image must be in JPEG, JPG, or PNG format.
  	"DynmcProductID"		True (dynamic products only)	Unique ID for dynamic product from a third-party application
  	"DynmcProductInfo"			Dynamic product item type, such as rental or permanent purchase
  	"DynmcShareCategory"			Dynamic product share category
  	"DynmcTaxCategory"			Dynamic product tax category
  	"StltAppId"		False	Settlement application ID For Samsung internal use only. Do not use.

• BuyItem() method response parameters:

Note

• "InvoiceID" in payDetail is available since Tizen 5.0
• The “Dynamic Product” type is also supported on Samsung Checkout.
  
  For more information on offering dynamic products in your application, contact a Samsung representative by going to "Samsung Apps TV Seller Office > Support" and creating a "1:1 Q&A" support ticket.

Country and Currency Codes

The following table lists countries with their corresponding country code, currency, and currency code.