diff --git a/src/Regula.DocumentReader.WebClient/Model/DocVisualExtendedField.cs b/src/Regula.DocumentReader.WebClient/Model/DocVisualExtendedField.cs
index 4c51768..4beffb4 100644
--- a/src/Regula.DocumentReader.WebClient/Model/DocVisualExtendedField.cs
+++ b/src/Regula.DocumentReader.WebClient/Model/DocVisualExtendedField.cs
@@ -46,7 +46,7 @@ protected DocVisualExtendedField() { }
         /// <param name="stringsCount">Number of StringsResult array elements (required).</param>
         /// <param name="stringsResult">Array of recognizing probabilities for a each line of text field. Only for Result.VISUAL_TEXT and Result.MRZ_TEXT results. (required).</param>
         /// <param name="bufLength">Buf_Text text string length (required).</param>
-        /// <param name="bufText">Text field data in UTF8 format. Results of reading different lines of a multi-line field are separated by &#39;^&#39; (required).</param>
+        /// <param name="bufText">Text field data in UTF8 format. Results of reading different lines of a multi-line field are separated by &#39;^&#39;.</param>
         /// <param name="fieldMask">fieldMask.</param>
         /// <param name="validity">validity.</param>
         /// <param name="inComparison">inComparison.</param>
diff --git a/src/Regula.DocumentReader.WebClient/Model/EncryptedRCLItem.cs b/src/Regula.DocumentReader.WebClient/Model/EncryptedRCLItem.cs
index 2b1bfb4..8aab898 100644
--- a/src/Regula.DocumentReader.WebClient/Model/EncryptedRCLItem.cs
+++ b/src/Regula.DocumentReader.WebClient/Model/EncryptedRCLItem.cs
@@ -56,7 +56,7 @@ protected EncryptedRCLItem() { }
         /// </summary>
         /// <value>Base64 encoded data</value>
         /*
-        <example>[B@1c224bac</example>
+        <example>[B@1f89ae0</example>
         */
         [DataMember(Name = "EncryptedRCL", IsRequired = true, EmitDefaultValue = true)]
         public byte[] EncryptedRCL { get; set; }
diff --git a/src/Regula.DocumentReader.WebClient/Model/EncryptedRCLResult.cs b/src/Regula.DocumentReader.WebClient/Model/EncryptedRCLResult.cs
index a3b905f..2afb2ef 100644
--- a/src/Regula.DocumentReader.WebClient/Model/EncryptedRCLResult.cs
+++ b/src/Regula.DocumentReader.WebClient/Model/EncryptedRCLResult.cs
@@ -62,7 +62,7 @@ protected EncryptedRCLResult() { }
         /// </summary>
         /// <value>Base64 encoded data</value>
         /*
-        <example>[B@1c224bac</example>
+        <example>[B@1f89ae0</example>
         */
         [DataMember(Name = "EncryptedRCL", IsRequired = true, EmitDefaultValue = true)]
         public byte[] EncryptedRCL { get; set; }
diff --git a/src/Regula.DocumentReader.WebClient/Model/LicenseItem.cs b/src/Regula.DocumentReader.WebClient/Model/LicenseItem.cs
index bb41f3c..8dbcba0 100644
--- a/src/Regula.DocumentReader.WebClient/Model/LicenseItem.cs
+++ b/src/Regula.DocumentReader.WebClient/Model/LicenseItem.cs
@@ -56,7 +56,7 @@ protected LicenseItem() { }
         /// </summary>
         /// <value>Base64 encoded data</value>
         /*
-        <example>[B@4333699a</example>
+        <example>[B@1a81e6d9</example>
         */
         [DataMember(Name = "License", IsRequired = true, EmitDefaultValue = true)]
         public byte[] License { get; set; }
diff --git a/src/Regula.DocumentReader.WebClient/Model/LicenseResult.cs b/src/Regula.DocumentReader.WebClient/Model/LicenseResult.cs
index 91c4470..327c47d 100644
--- a/src/Regula.DocumentReader.WebClient/Model/LicenseResult.cs
+++ b/src/Regula.DocumentReader.WebClient/Model/LicenseResult.cs
@@ -62,7 +62,7 @@ protected LicenseResult() { }
         /// </summary>
         /// <value>Base64 encoded data</value>
         /*
-        <example>[B@4333699a</example>
+        <example>[B@1a81e6d9</example>
         */
         [DataMember(Name = "License", IsRequired = true, EmitDefaultValue = true)]
         public byte[] License { get; set; }
diff --git a/src/Regula.DocumentReader.WebClient/Model/RFIDDocVisualExtendedField.cs b/src/Regula.DocumentReader.WebClient/Model/RFIDDocVisualExtendedField.cs
index 47ff6a7..d187ad8 100644
--- a/src/Regula.DocumentReader.WebClient/Model/RFIDDocVisualExtendedField.cs
+++ b/src/Regula.DocumentReader.WebClient/Model/RFIDDocVisualExtendedField.cs
@@ -49,7 +49,7 @@ protected RFIDDocVisualExtendedField() { }
         /// <param name="stringsCount">Number of StringsResult array elements (required).</param>
         /// <param name="stringsResult">Array of recognizing probabilities for a each line of text field. Only for Result.VISUAL_TEXT and Result.MRZ_TEXT results. (required).</param>
         /// <param name="bufLength">Buf_Text text string length (required).</param>
-        /// <param name="bufText">Text field data in UTF8 format. Results of reading different lines of a multi-line field are separated by &#39;^&#39; (required).</param>
+        /// <param name="bufText">Text field data in UTF8 format. Results of reading different lines of a multi-line field are separated by &#39;^&#39;.</param>
         /// <param name="fieldMask">fieldMask.</param>
         /// <param name="validity">validity.</param>
         /// <param name="inComparison">inComparison.</param>
diff --git a/src/Regula.DocumentReader.WebClient/Model/RfidSessionData.cs b/src/Regula.DocumentReader.WebClient/Model/RfidSessionData.cs
index 873eb26..3b58765 100644
--- a/src/Regula.DocumentReader.WebClient/Model/RfidSessionData.cs
+++ b/src/Regula.DocumentReader.WebClient/Model/RfidSessionData.cs
@@ -70,7 +70,7 @@ protected RfidSessionData() { }
         /// <param name="rootFiles">List of containers to store information about the read files of the root Master File (required).</param>
         /// <param name="totalBytesSent">Total number of bytes transmitted to the RFID-chip during the whole session (required).</param>
         /// <param name="totalBytesReceived">Total number of bytes received from the RFID-chip during the whole session (required).</param>
-        /// <param name="sessionKey">sessionKey (required).</param>
+        /// <param name="sessionKey">sessionKey.</param>
         /// <param name="sessionTerminal">sessionTerminal (required).</param>
         /// <param name="sessionProcedure">sessionProcedure (required).</param>
         /// <param name="securityObjects">List of containers to store information about the detected document security objects (required).</param>
@@ -105,12 +105,6 @@ protected RfidSessionData() { }
             this.RootFiles = rootFiles;
             this.TotalBytesSent = totalBytesSent;
             this.TotalBytesReceived = totalBytesReceived;
-            // to ensure "sessionKey" is required (not null)
-            if (sessionKey == null)
-            {
-                throw new ArgumentNullException("sessionKey is a required property for RfidSessionData and cannot be null");
-            }
-            this.SessionKey = sessionKey;
             // to ensure "sessionTerminal" is required (not null)
             if (sessionTerminal == null)
             {
@@ -128,6 +122,7 @@ protected RfidSessionData() { }
             this.SDKVersion = sDKVersion;
             this.DriverVersion = driverVersion;
             this.FirmwareVersion = firmwareVersion;
+            this.SessionKey = sessionKey;
             this.Status = status;
         }
 
@@ -210,8 +205,8 @@ protected RfidSessionData() { }
         /// <summary>
         /// Gets or Sets SessionKey
         /// </summary>
-        [DataMember(Name = "Session_key", IsRequired = true, EmitDefaultValue = true)]
-        public RfidAccessKey SessionKey { get; set; }
+        [DataMember(Name = "Session_key", EmitDefaultValue = false)]
+        public RfidAccessKey? SessionKey { get; set; }
 
         /// <summary>
         /// Gets or Sets SessionTerminal
diff --git a/src/Regula.DocumentReader.WebClient/Model/Source.cs b/src/Regula.DocumentReader.WebClient/Model/Source.cs
index a2e7bfd..9ae6602 100644
--- a/src/Regula.DocumentReader.WebClient/Model/Source.cs
+++ b/src/Regula.DocumentReader.WebClient/Model/Source.cs
@@ -67,7 +67,19 @@ public enum Source
         /// Enum EXTERNAL for value: EXTERNAL
         /// </summary>
         [EnumMember(Value = "EXTERNAL")]
-        EXTERNAL = 6
+        EXTERNAL = 6,
+
+        /// <summary>
+        /// Enum LIVE for value: LIVE
+        /// </summary>
+        [EnumMember(Value = "LIVE")]
+        LIVE = 7,
+
+        /// <summary>
+        /// Enum FINGERPRINT for value: FINGERPRINT
+        /// </summary>
+        [EnumMember(Value = "FINGERPRINT")]
+        FINGERPRINT = 8
     }
 
 }
diff --git a/src/Regula.DocumentReader.WebClient/Model/VisualExtendedFieldItem.cs b/src/Regula.DocumentReader.WebClient/Model/VisualExtendedFieldItem.cs
index 8dc44f8..5b53659 100644
--- a/src/Regula.DocumentReader.WebClient/Model/VisualExtendedFieldItem.cs
+++ b/src/Regula.DocumentReader.WebClient/Model/VisualExtendedFieldItem.cs
@@ -57,7 +57,7 @@ protected VisualExtendedFieldItem() { }
         /// <param name="stringsCount">Number of StringsResult array elements (required).</param>
         /// <param name="stringsResult">Array of recognizing probabilities for a each line of text field. Only for Result.VISUAL_TEXT and Result.MRZ_TEXT results. (required).</param>
         /// <param name="bufLength">Buf_Text text string length (required).</param>
-        /// <param name="bufText">Text field data in UTF8 format. Results of reading different lines of a multi-line field are separated by &#39;^&#39; (required).</param>
+        /// <param name="bufText">Text field data in UTF8 format. Results of reading different lines of a multi-line field are separated by &#39;^&#39;.</param>
         /// <param name="fieldMask">fieldMask.</param>
         /// <param name="validity">validity.</param>
         /// <param name="inComparison">inComparison.</param>
@@ -81,11 +81,6 @@ protected VisualExtendedFieldItem() { }
             }
             this.StringsResult = stringsResult;
             this.BufLength = bufLength;
-            // to ensure "bufText" is required (not null)
-            if (bufText == null)
-            {
-                throw new ArgumentNullException("bufText is a required property for VisualExtendedFieldItem and cannot be null");
-            }
             this.BufText = bufText;
             this.FieldMask = fieldMask;
             this.Validity = validity;
@@ -127,8 +122,8 @@ protected VisualExtendedFieldItem() { }
         /// Text field data in UTF8 format. Results of reading different lines of a multi-line field are separated by &#39;^&#39;
         /// </summary>
         /// <value>Text field data in UTF8 format. Results of reading different lines of a multi-line field are separated by &#39;^&#39;</value>
-        [DataMember(Name = "Buf_Text", IsRequired = true, EmitDefaultValue = true)]
-        public string BufText { get; set; }
+        [DataMember(Name = "Buf_Text", EmitDefaultValue = false)]
+        public string? BufText { get; set; }
 
         /// <summary>
         /// Gets or Sets FieldMask