diff --git a/NordigenClientModified.zip b/NordigenClientModified.zip
deleted file mode 100644
index 5226bfc..0000000
Binary files a/NordigenClientModified.zip and /dev/null differ
diff --git a/src/RobinTTY.NordigenApiClient.Tests/Serialization/TransactionTests.cs b/src/RobinTTY.NordigenApiClient.Tests/Serialization/TransactionTests.cs
index 291e11f..431eba6 100644
--- a/src/RobinTTY.NordigenApiClient.Tests/Serialization/TransactionTests.cs
+++ b/src/RobinTTY.NordigenApiClient.Tests/Serialization/TransactionTests.cs
@@ -10,20 +10,48 @@ namespace RobinTTY.NordigenApiClient.Tests.Serialization;
 internal class TransactionTests
 {
     /// <summary>
-    /// Tests the correct deserialization of transactions.
+    /// Tests the correct deserialization of transactions with a single embedded currency exchange object.
     /// </summary>
     [Test]
-    public void DeserializeTransaction()
+    public void DeserializeTransactionWithSingleCurrencyExchange()
+    {
+        const string json =
+            "{ \"transactionId\": \"AB123456789\", \"entryReference\": \"123456789\", \"bookingDate\": \"2023-03-20\", \"bookingDateTime\": \"2023-03-20T00:00:00+00:00\", \"transactionAmount\": { \"amount\": \"-33.06\", \"currency\": \"GBP\" }, \"currencyExchange\": { \"sourceCurrency\": \"USD\", \"exchangeRate\": \"1.20961887\", \"unitCurrency\": \"USD\", \"targetCurrency\": \"GBP\", \"instructedAmount\": { \"amount\": \"-33.06\", \"currency\": \"GBP\" } }, \"remittanceInformationUnstructured\": \"my reference here\", \"additionalInformation\": \"123456789\", \"proprietaryBankTransactionCode\": \"OTHER_PURCHASE\", \"merchantCategoryCode\": \"5045\", \"internalTransactionId\": \"abcdef\" }";
+
+        var options = new JsonSerializerOptions
+        {
+            Converters = {new CultureSpecificDecimalConverter()}
+        };
+        var transaction = JsonSerializer.Deserialize<Transaction>(json, options);
+        
+        Assert.Multiple(() =>
+        {
+            Assert.That(transaction!.CurrencyExchange, Is.Not.Null);
+            Assert.That(transaction.CurrencyExchange!.First().ExchangeRate, Is.EqualTo(1.20961887));
+            Assert.That(transaction.CurrencyExchange!.First().InstructedAmount!.Amount, Is.EqualTo(-33.06));
+            Assert.That(transaction.CurrencyExchange!.First().InstructedAmount!.Currency, Is.EqualTo("GBP"));
+            Assert.That(transaction.CurrencyExchange!.First().SourceCurrency, Is.EqualTo("USD"));
+            Assert.That(transaction.CurrencyExchange!.First().TargetCurrency, Is.EqualTo("GBP"));
+            Assert.That(transaction.CurrencyExchange!.First().UnitCurrency, Is.EqualTo("USD"));
+            Assert.That(transaction.CurrencyExchange!.First().QuotationDate, Is.Null);
+        });
+    }
+
+    /// <summary>
+    /// Tests the correct deserialization of transactions with multiple embedded currency exchange objects.
+    /// </summary>
+    [Test]
+    public void DeserializeTransactionWithMultipleCurrencyExchange()
     {
         const string json =
             "{ \"transactionId\": \"AB123456789\", \"entryReference\": \"123456789\", \"bookingDate\": \"2023-03-20\", \"bookingDateTime\": \"2023-03-20T00:00:00+00:00\", \"transactionAmount\": { \"amount\": \"-33.06\", \"currency\": \"GBP\" }, \"currencyExchange\":[{\"sourceCurrency\":\"USD\",\"exchangeRate\":\"1.20961887\",\"unitCurrency\":\"USD\",\"targetCurrency\":\"GBP\"}], \"remittanceInformationUnstructured\": \"my reference here\", \"additionalInformation\": \"123456789\", \"proprietaryBankTransactionCode\": \"OTHER_PURCHASE\", \"merchantCategoryCode\": \"5045\", \"internalTransactionId\": \"abcdef\" }";
 
-        // We need the culture specific decimal converter here, since it it accepting strings
         var options = new JsonSerializerOptions
         {
-            Converters = {new JsonWebTokenConverter(), new GuidConverter(), new CultureSpecificDecimalConverter()}
+            Converters = { new CultureSpecificDecimalConverter() }
         };
         var transaction = JsonSerializer.Deserialize<Transaction>(json, options);
+        
         Assert.Multiple(() =>
         {
             Assert.That(transaction!.CurrencyExchange, Is.Not.Null);
diff --git a/src/RobinTTY.NordigenApiClient/JsonConverters/SingleOrArrayConverter.cs b/src/RobinTTY.NordigenApiClient/JsonConverters/SingleOrArrayConverter.cs
index 1eadbd3..7feca25 100644
--- a/src/RobinTTY.NordigenApiClient/JsonConverters/SingleOrArrayConverter.cs
+++ b/src/RobinTTY.NordigenApiClient/JsonConverters/SingleOrArrayConverter.cs
@@ -3,7 +3,8 @@
 
 namespace RobinTTY.NordigenApiClient.JsonConverters;
 
-internal class SingleOrArrayConverter<TCollection, TItem> : JsonConverter<TCollection> where TCollection : class, ICollection<TItem>, new()
+internal class SingleOrArrayConverter<TCollection, TItem> : JsonConverter<TCollection>
+    where TCollection : class, ICollection<TItem>, new()
 {
     public override TCollection? Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
     {
@@ -15,27 +16,21 @@ namespace RobinTTY.NordigenApiClient.JsonConverters;
                 var list = new TCollection();
                 while (reader.Read())
                 {
-                    if (reader.TokenType == JsonTokenType.EndArray)
-                        break;
+                    if (reader.TokenType == JsonTokenType.EndArray) break;
                     var listItem = JsonSerializer.Deserialize<TItem>(ref reader, options);
-                    if (listItem != null)
-                    {
-                        list.Add(listItem);
-                    }
+                    if (listItem != null) list.Add(listItem);
                 }
                 return list;
             default:
                 var item = JsonSerializer.Deserialize<TItem>(ref reader, options);
-                return item != null ? new TCollection { item } : null;
+                return item != null ? new TCollection {item} : null;
         }
     }
 
     public override void Write(Utf8JsonWriter writer, TCollection value, JsonSerializerOptions options)
     {
         if (value.Count == 1)
-        {
             JsonSerializer.Serialize(writer, value.First(), options);
-        }
         else
         {
             writer.WriteStartArray();
@@ -44,4 +39,4 @@ public override void Write(Utf8JsonWriter writer, TCollection value, JsonSeriali
             writer.WriteEndArray();
         }
     }
-}
+}
\ No newline at end of file
diff --git a/src/RobinTTY.NordigenApiClient/Models/Responses/AmountCurrencyPair.cs b/src/RobinTTY.NordigenApiClient/Models/Responses/AmountCurrencyPair.cs
index 7714943..5458c5e 100644
--- a/src/RobinTTY.NordigenApiClient/Models/Responses/AmountCurrencyPair.cs
+++ b/src/RobinTTY.NordigenApiClient/Models/Responses/AmountCurrencyPair.cs
@@ -5,7 +5,6 @@ namespace RobinTTY.NordigenApiClient.Models.Responses;
 /// <summary>
 /// Pair representing an amount and the currency the amount is denominated in.
 /// </summary>
-[JsonNumberHandling(JsonNumberHandling.AllowReadingFromString)]
 public class AmountCurrencyPair
 {
     /// <summary>
@@ -31,4 +30,4 @@ public AmountCurrencyPair(decimal amount, string currency)
         Amount = amount;
         Currency = currency;
     }
-}
+}
\ No newline at end of file
diff --git a/src/RobinTTY.NordigenApiClient/Models/Responses/CurrencyExchange.cs b/src/RobinTTY.NordigenApiClient/Models/Responses/CurrencyExchange.cs
index 850cdfd..a3aae10 100644
--- a/src/RobinTTY.NordigenApiClient/Models/Responses/CurrencyExchange.cs
+++ b/src/RobinTTY.NordigenApiClient/Models/Responses/CurrencyExchange.cs
@@ -5,7 +5,6 @@ namespace RobinTTY.NordigenApiClient.Models.Responses;
 /// <summary>
 /// Detailed information about a currency exchange.
 /// </summary>
-[JsonNumberHandling(JsonNumberHandling.AllowReadingFromString)]
 public class CurrencyExchange
 {
     /// <summary>