Merge branch 'main' of https://github.com/abuzuhri/Amazon-SP-API-CSharp

Author: abuzuhri

Source/FikaAmazonAPI/AmazonSpApiSDK/Models/FulfillmentOutbound/Currency.cs

@@ -60,14 +60,16 @@ public Currency() { }
         /// Three-digit currency code in ISO 4217 format.
         /// </summary>
         /// <value>Three-digit currency code in ISO 4217 format.</value>
-        [DataMember(Name = "CurrencyCode", EmitDefaultValue = false)]
+        [DataMember(Name = "currencyCode", EmitDefaultValue = false)]
+        [JsonProperty(PropertyName = "currencyCode")] 
         public string CurrencyCode { get; set; }
 
         /// <summary>
         /// The currency amount.
         /// </summary>
         /// <value>The currency amount.</value>
-        [DataMember(Name = "Value", EmitDefaultValue = false)]
+        [DataMember(Name = "value", EmitDefaultValue = false)]
+        [JsonProperty(PropertyName = "value")]
         public string Value { get; set; }
 
         /// <summary>

Source/FikaAmazonAPI/Services/NotificationService.cs

@@ -136,18 +136,18 @@ public async Task StartReceivingNotificationMessagesAsync(ParameterMessageReceiv
                     try
                     {
                         var result = await amazonSQSClient.ReceiveMessageAsync(receiveMessageRequest, cancellationToken);
-                        var Messages = result.Messages;
+                        var Messages = result.Messages ?? new List<Message>();
                         if (Messages.Count > 0)
                         {
                             foreach (var msg in Messages)
                             {
                                 ProcessAnyOfferChangedMessage(msg, messageReceiver, amazonSQSClient, SQS_URL, isDeleteNotificationAfterRead, cancellationToken).ConfigureAwait(false);
 
                             }
-
-                            if (Messages.Count < 10)
-                                Thread.Sleep(1000 * 5);
                         }
+
+                        if (Messages.Count < 10)
+                            Thread.Sleep(1000 * 5);
                     }
                     catch (Exception ex)
                     {