diff --git a/EnvelopeGenerator.Domain/Entities/Envelope.cs b/EnvelopeGenerator.Domain/Entities/Envelope.cs
index 8d1a9a11..80f31307 100644
--- a/EnvelopeGenerator.Domain/Entities/Envelope.cs
+++ b/EnvelopeGenerator.Domain/Entities/Envelope.cs
@@ -5,204 +5,201 @@ using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
 using EnvelopeGenerator.Domain.Constants;
 using Newtonsoft.Json;
-
 #if NETFRAMEWORK
 using System.Collections.Generic;
 using System.Linq;
 #endif
 
 namespace EnvelopeGenerator.Domain.Entities
-#if NET
-    ;
-#elif NETFRAMEWORK
 {
-#endif
-
-[Table("TBSIG_ENVELOPE", Schema = "dbo")]
-public class Envelope : IHasAddedWhen, IHasChangedWhen
-{
-    public Envelope()
+    [Table("TBSIG_ENVELOPE", Schema = "dbo")]
+    public class Envelope : IHasAddedWhen, IHasChangedWhen
     {
-        // TODO: * Check the Form App and remove the default value
+        public Envelope()
+        {
+            // TODO: * Check the Form App and remove the default value
 #if NETFRAMEWORK
-        Id = 0;
-        Status = EnvelopeStatus.EnvelopeCreated;
-        Uuid = Guid.NewGuid().ToString();
-        Message = My.Resources.Envelope.Please_read_and_sign_this_document;
-        Title= string.Empty;
-        Comment = string.Empty;
-        Language = "de-DE";
-        SendReminderEmails = false;
-        FirstReminderDays = 0;
-        ReminderIntervalDays = 0;
-        CertificationType = (int)Constants.CertificationType.AdvancedElectronicSignature;
-        UseAccessCode = false;
-        Documents = Enumerable.Empty<Document>().ToList();
-        Histories = Enumerable.Empty<History>().ToList();
-        EnvelopeReceivers = Enumerable.Empty<EnvelopeReceiver>().ToList();
+            Id = 0;
+            Status = EnvelopeStatus.EnvelopeCreated;
+            Uuid = Guid.NewGuid().ToString();
+            Message = My.Resources.Envelope.Please_read_and_sign_this_document;
+            Title = string.Empty;
+            Comment = string.Empty;
+            Language = "de-DE";
+            SendReminderEmails = false;
+            FirstReminderDays = 0;
+            ReminderIntervalDays = 0;
+            CertificationType = (int)Constants.CertificationType.AdvancedElectronicSignature;
+            UseAccessCode = false;
+            Documents = Enumerable.Empty<Document>().ToList();
+            Histories = Enumerable.Empty<History>().ToList();
+            EnvelopeReceivers = Enumerable.Empty<EnvelopeReceiver>().ToList();
 #endif
+        }
+
+        [Key]
+        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
+        [Column("GUID")]
+        public int Id { get; set; }
+
+        [Required]
+        [Column("USER_ID")]
+        public int UserId { get; set; }
+
+        [Required]
+        [Column("STATUS")]
+        public EnvelopeStatus Status { get; set; }
+
+        [Required]
+        [Column("ENVELOPE_UUID", TypeName = "nvarchar(36)")]
+        public string Uuid { get; set; }
+
+        [Column("MESSAGE", TypeName = "nvarchar(max)")]
+        public string Message { get; set; }
+
+        [Column("EXPIRES_WHEN", TypeName = "datetime")]
+        public DateTime? ExpiresWhen { get; set; }
+
+        [Column("EXPIRES_WARNING_WHEN", TypeName = "datetime")]
+        public DateTime? ExpiresWarningWhen { get; set; }
+
+        [Required]
+        [Column("ADDED_WHEN", TypeName = "datetime")]
+        public DateTime AddedWhen { get; set; }
+
+        [Column("CHANGED_WHEN", TypeName = "datetime")]
+        public DateTime? ChangedWhen { get; set; }
+
+        [Column("TITLE", TypeName = "nvarchar(128)")]
+        public string
+#if nullable
+        ?
+#endif
+            Title
+        { get; set; }
+
+        [Column("COMMENT", TypeName = "nvarchar(128)")]
+        public string Comment { get; set; }
+
+        [Column("CONTRACT_TYPE")]
+        public int? ContractType { get; set; }
+
+#if NETFRAMEWORK
+        [NotMapped]
+        public string ContractTypeTranslated => My.Resources.Model.ResourceManager.GetString(ContractType.ToString());
+#endif
+
+        [Column("LANGUAGE", TypeName = "nvarchar(5)")]
+        public string Language { get; set; }
+
+        [Column("SEND_REMINDER_EMAILS")]
+        public bool SendReminderEmails { get; set; }
+
+        [Column("FIRST_REMINDER_DAYS")]
+        public int? FirstReminderDays { get; set; }
+
+        [Column("REMINDER_INTERVAL_DAYS")]
+        public int? ReminderIntervalDays { get; set; }
+
+        [Column("ENVELOPE_TYPE")]
+        public int? EnvelopeTypeId { get; set; }
+
+        [JsonIgnore]
+        [NotMapped]
+        public bool ReadOnly => EnvelopeTypeId == 2;
+
+        [Column("CERTIFICATION_TYPE")]
+        public int? CertificationType { get; set; }
+
+        [Column("USE_ACCESS_CODE")]
+        public bool UseAccessCode { get; set; }
+
+        [Column("FINAL_EMAIL_TO_CREATOR")]
+        public int? FinalEmailToCreator { get; set; }
+
+        [Column("FINAL_EMAIL_TO_RECEIVERS")]
+        public int? FinalEmailToReceivers { get; set; }
+
+        [Column("EXPIRES_WHEN_DAYS")]
+        public int? ExpiresWhenDays { get; set; }
+
+        [Column("EXPIRES_WARNING_WHEN_DAYS")]
+        public int? ExpiresWarningWhenDays { get; set; }
+
+        [ForeignKey("UserId")]
+        public User User { get; set; }
+
+        [Column("TFA_ENABLED")]
+        public bool TfaEnabled { get; set; }
+#if NETFRAMEWORK
+            = false;
+#endif
+
+        [NotMapped]
+        [Column("DOC_RESULT")]
+        public byte[]
+#if nullable
+        ?
+#endif
+            DocResult
+        { get; set; }
+
+        [ForeignKey("EnvelopeTypeId")]
+        public virtual EnvelopeType
+#if nullable
+        ?
+#endif
+            Type
+        { get; set; }
+
+#if NETFRAMEWORK
+        [NotMapped]
+        public string CURRENT_WORK_APP { get; set; } = "signFLOW GUI";
+
+        [NotMapped]
+        public bool IsAlreadySent => Status > EnvelopeStatus.EnvelopeSaved;
+#endif
+
+        public List<Document>
+#if nullable
+        ?
+#endif
+            Documents
+        { get; set; }
+
+        public List<History>
+#if nullable
+        ?
+#endif
+            Histories
+        { get; set; }
+
+        public List<EnvelopeReceiver>
+#if nullable
+        ?
+#endif
+            EnvelopeReceivers
+        { get; set; }
+
+        //#if NETFRAMEWORK
+        /// <summary>
+        /// Validates whether the receiver and document data are complete.
+        /// </summary>
+        public List<string> ValidateReceiverDocumentData()
+        {
+            var errors = new List<string>();
+
+            if (!Documents?.Any() ?? true)
+                errors.Add(My.Resources.Envelope.Missing_Documents);
+
+            if (!EnvelopeReceivers?.Any() ?? true)
+                errors.Add(My.Resources.Envelope.Missing_Receivers);
+
+            if (EnvelopeReceivers?.Any(r => !r.HasEmailAndName) ?? false)
+                errors.Add(My.Resources.Envelope.Incomplete_Receivers);
+
+            return errors;
+        }
+        //#endif
     }
-
-    [Key]
-    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
-    [Column("GUID")]
-    public int Id { get; set; }
-
-    [Required]
-    [Column("USER_ID")]
-    public int UserId { get; set; }
-
-    [Required]
-    [Column("STATUS")]
-    public EnvelopeStatus Status { get; set; }
-
-    [Required]
-    [Column("ENVELOPE_UUID", TypeName = "nvarchar(36)")]
-    public string Uuid { get; set; }
-
-    [Column("MESSAGE", TypeName = "nvarchar(max)")]
-    public string Message { get; set; }
-
-    [Column("EXPIRES_WHEN", TypeName = "datetime")]
-    public DateTime? ExpiresWhen { get; set; }
-
-    [Column("EXPIRES_WARNING_WHEN", TypeName = "datetime")]
-    public DateTime? ExpiresWarningWhen { get; set; }
-
-    [Required]
-    [Column("ADDED_WHEN", TypeName = "datetime")]
-    public DateTime AddedWhen { get; set; }
-
-    [Column("CHANGED_WHEN", TypeName = "datetime")]
-    public DateTime? ChangedWhen { get; set; }
-
-    [Column("TITLE", TypeName = "nvarchar(128)")]
-    public string
-#if nullable
-        ?
-#endif
-        Title { get; set; }
-
-    [Column("COMMENT", TypeName = "nvarchar(128)")]
-    public string Comment { get; set; }
-
-    [Column("CONTRACT_TYPE")]
-    public int? ContractType { get; set; }
-
-#if NETFRAMEWORK
-    [NotMapped]
-    public string ContractTypeTranslated => My.Resources.Model.ResourceManager.GetString(ContractType.ToString());
-#endif
-
-    [Column("LANGUAGE", TypeName = "nvarchar(5)")]
-    public string Language { get; set; }
-
-    [Column("SEND_REMINDER_EMAILS")]
-    public bool SendReminderEmails { get; set; }
-
-    [Column("FIRST_REMINDER_DAYS")]
-    public int? FirstReminderDays { get; set; }
-
-    [Column("REMINDER_INTERVAL_DAYS")]
-    public int? ReminderIntervalDays { get; set; }
-
-    [Column("ENVELOPE_TYPE")]
-    public int? EnvelopeTypeId { get; set; }
-
-    [JsonIgnore]
-    [NotMapped]
-    public bool ReadOnly => EnvelopeTypeId == 2;
-    
-    [Column("CERTIFICATION_TYPE")]
-    public int? CertificationType { get; set; }
-
-    [Column("USE_ACCESS_CODE")]
-    public bool UseAccessCode { get; set; }
-
-    [Column("FINAL_EMAIL_TO_CREATOR")]
-    public int? FinalEmailToCreator { get; set; }
-
-    [Column("FINAL_EMAIL_TO_RECEIVERS")]
-    public int? FinalEmailToReceivers { get; set; }
-
-    [Column("EXPIRES_WHEN_DAYS")]
-    public int? ExpiresWhenDays { get; set; }
-
-    [Column("EXPIRES_WARNING_WHEN_DAYS")]
-    public int? ExpiresWarningWhenDays { get; set; }
-
-    [ForeignKey("UserId")]
-    public User User { get; set; }
-
-    [Column("TFA_ENABLED")]
-    public bool TfaEnabled { get; set; }
-#if NETFRAMEWORK
-        = false;
-#endif
-
-    [NotMapped]
-    [Column("DOC_RESULT")]
-    public byte[]
-#if nullable
-        ?
-#endif
-        DocResult { get; set; }
-
-    [ForeignKey("EnvelopeTypeId")]
-    public virtual EnvelopeType
-#if nullable
-        ?
-#endif
-        Type { get; set; }
-
-#if NETFRAMEWORK
-    [NotMapped]
-    public string CURRENT_WORK_APP { get; set; } = "signFLOW GUI";
-
-    [NotMapped]
-    public bool IsAlreadySent => Status > EnvelopeStatus.EnvelopeSaved;
-#endif
-
-    public List<Document>
-#if nullable
-        ?
-#endif
-        Documents { get; set; }
-
-    public List<History>
-#if nullable
-        ?
-#endif
-        Histories { get; set; }
-
-    public List<EnvelopeReceiver>
-#if nullable
-        ?
-#endif
-        EnvelopeReceivers { get; set; }
-
-//#if NETFRAMEWORK
-    /// <summary>
-    /// Validates whether the receiver and document data are complete.
-    /// </summary>
-    public List<string> ValidateReceiverDocumentData()
-    {
-        var errors = new List<string>();
-
-        if (!Documents?.Any() ?? true)
-            errors.Add(My.Resources.Envelope.Missing_Documents);
-
-        if (!EnvelopeReceivers?.Any() ?? true)
-            errors.Add(My.Resources.Envelope.Missing_Receivers);
-
-        if (EnvelopeReceivers?.Any(r => !r.HasEmailAndName) ?? false)
-            errors.Add(My.Resources.Envelope.Incomplete_Receivers);
-
-        return errors;
-    }
-//#endif
-}
-
-#if NETFRAMEWORK
-    }
-#endif
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/EnvelopeGenerator.Domain/Entities/Receiver.cs b/EnvelopeGenerator.Domain/Entities/Receiver.cs
index e1ecaacd..fc8f1e85 100644
--- a/EnvelopeGenerator.Domain/Entities/Receiver.cs
+++ b/EnvelopeGenerator.Domain/Entities/Receiver.cs
@@ -1,51 +1,42 @@
-using System;
-using EnvelopeGenerator.Domain.Interfaces;
+using EnvelopeGenerator.Domain.Interfaces;
 using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
-using System.Drawing;
 #if NETFRAMEWORK
+using System;
 using System.Collections.Generic;
 #endif
 
 namespace EnvelopeGenerator.Domain.Entities
-#if NET
-    ;
-#elif NETFRAMEWORK
 {
-#endif
+    [Table("TBSIG_RECEIVER", Schema = "dbo")]
+    public class Receiver : IHasAddedWhen
+    {
+        [Key]
+        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
+        [Column("GUID")]
+        public int Id { get; set; }
 
-[Table("TBSIG_RECEIVER", Schema = "dbo")]
-public class Receiver : IHasAddedWhen
-{
-    [Key]
-    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
-    [Column("GUID")]
-    public int Id { get; set; }
+        [Required, EmailAddress]
+        [Column("EMAIL_ADDRESS", TypeName = "nvarchar(250)")]
+        [StringLength(250)]
+        public string EmailAddress { get; set; }
 
-    [Required, EmailAddress]
-    [Column("EMAIL_ADDRESS", TypeName = "nvarchar(250)")]
-    [StringLength(250)]
-    public string EmailAddress { get; set; }
+        [Required]
+        [Column("SIGNATURE", TypeName = "nvarchar(64)")]
+        public string Signature { get; set; }
 
-    [Required]
-    [Column("SIGNATURE", TypeName = "nvarchar(64)")]
-    public string Signature { get; set; }
+        [Required]
+        [Column("ADDED_WHEN", TypeName = "datetime")]
+        public DateTime AddedWhen { get; set; }
 
-    [Required]
-    [Column("ADDED_WHEN", TypeName = "datetime")]
-    public DateTime AddedWhen { get; set; }
+        [Column("TOTP_SECRET_KEY", TypeName = "nvarchar(MAX)")]
+        public string TotpSecretkey { get; set; }
 
-    [Column("TOTP_SECRET_KEY", TypeName = "nvarchar(MAX)")]
-    public string TotpSecretkey { get; set; }
+        [Column("TFA_REG_DEADLINE", TypeName = "datetime")]
+        public DateTime? TfaRegDeadline { get; set; }
 
-    [Column("TFA_REG_DEADLINE", TypeName = "datetime")]
-    public DateTime? TfaRegDeadline { get; set; }
+        public List<EnvelopeReceiver> EnvelopeReceivers { get; set; }
 
-    public List<EnvelopeReceiver> EnvelopeReceivers { get; set; }
-
-    public string GetSignature() => EmailAddress.ToUpperInvariant().GetChecksum();
-}
-
-#if NETFRAMEWORK
+        public string GetSignature() => EmailAddress.ToUpperInvariant().GetChecksum();
     }
-#endif
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/EnvelopeGenerator.Domain/Entities/Signature.cs b/EnvelopeGenerator.Domain/Entities/Signature.cs
index e3c77b18..e673c12a 100644
--- a/EnvelopeGenerator.Domain/Entities/Signature.cs
+++ b/EnvelopeGenerator.Domain/Entities/Signature.cs
@@ -8,127 +8,122 @@ using System.Collections.Generic;
 #endif
 
 namespace EnvelopeGenerator.Domain.Entities
-#if NET
-    ;
-#elif NETFRAMEWORK
 {
-#endif
-
-[Table("TBSIG_DOCUMENT_RECEIVER_ELEMENT", Schema = "dbo")]
-public class Signature : ISignature, IHasReceiver, IHasAddedWhen, IHasChangedWhen, IHasChangedWho
-{
-    public Signature()
+    [Table("TBSIG_DOCUMENT_RECEIVER_ELEMENT", Schema = "dbo")]
+    public class Signature : ISignature, IHasReceiver, IHasAddedWhen, IHasChangedWhen, IHasChangedWho
     {
-        // TODO: * Check the Form App and remove the default value
+        public Signature()
+        {
+            // TODO: * Check the Form App and remove the default value
 #if NETFRAMEWORK
-        Id = -1;
-        Required = false;
-        ReadOnly = false;
-        AnnotationIndex = 0;
+            Id = -1;
+            Required = false;
+            ReadOnly = false;
+            AnnotationIndex = 0;
+#endif
+        }
+
+        [Key]
+        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
+        [Column("GUID")]
+        public int Id { get; set; }
+
+        [Required]
+        [Column("DOCUMENT_ID")]
+        public int DocumentId { get; set; }
+
+        [Required]
+        [Column("RECEIVER_ID")]
+        public int ReceiverId { get; set; }
+
+        [Required]
+        [Column("ELEMENT_TYPE")]
+        [DefaultValue(0)]
+        public int ElementType { get; set; }
+
+        [Required]
+        [Column("POSITION_X")]
+        [DefaultValue(0)]
+        public double X { get; set; }
+
+        [Required]
+        [Column("POSITION_Y")]
+        [DefaultValue(0)]
+        public double Y { get; set; }
+
+        [Required]
+        [Column("WIDTH")]
+        [DefaultValue(0)]
+        public double Width { get; set; }
+
+        [Required]
+        [Column("HEIGHT")]
+        [DefaultValue(0)]
+        public double Height { get; set; }
+
+        [Required]
+        [Column("PAGE")]
+        [DefaultValue(1)]
+        public int Page { get; set; }
+
+        [Required]
+        [Column("REQUIRED")]
+        [DefaultValue(false)]
+        public bool Required { get; set; }
+
+        [Column("TOOLTIP")]
+        public string Tooltip { get; set; }
+
+        [Required]
+        [Column("READ_ONLY")]
+        [DefaultValue(false)]
+        public bool ReadOnly { get; set; }
+
+        [Required]
+        [Column("ANNOTATION_INDEX")]
+        [DefaultValue(0)]
+        public int AnnotationIndex { get; set; }
+
+        [Required]
+        [Column("ADDED_WHEN", TypeName = "datetime")]
+        [DefaultValue("GETDATE()")]
+        public DateTime AddedWhen { get; set; }
+
+        [Column("CHANGED_WHEN", TypeName = "datetime")]
+        public DateTime? ChangedWhen { get; set; }
+
+        [Column("CHANGED_WHO", TypeName = "nvarchar(100)")]
+        public string
+#if nullable
+        ?
+#endif
+            ChangedWho
+        { get; set; }
+
+        [ForeignKey("DocumentId")]
+        public virtual Document Document { get; set; }
+
+        [ForeignKey("ReceiverId")]
+        public virtual Receiver
+#if nullable
+        ?
+#endif
+            Receiver
+        { get; set; }
+
+        public virtual IEnumerable<ElementAnnotation>
+#if nullable
+        ?
+#endif
+            Annotations
+        { get; set; }
+
+#if NETFRAMEWORK
+        [NotMapped]
+        public double Top => Math.Round(Y, 5);
+
+        [NotMapped]
+        public double Left => Math.Round(X, 5);
 #endif
     }
-
-    [Key]
-    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
-    [Column("GUID")]
-    public int Id { get; set; }
-
-    [Required]
-    [Column("DOCUMENT_ID")]
-    public int DocumentId { get; set; }
-
-    [Required]
-    [Column("RECEIVER_ID")]
-    public int ReceiverId { get; set; }
-
-    [Required]
-    [Column("ELEMENT_TYPE")]
-    [DefaultValue(0)]
-    public int ElementType { get; set; }
-
-    [Required]
-    [Column("POSITION_X")]
-    [DefaultValue(0)]
-    public double X { get; set; }
-
-    [Required]
-    [Column("POSITION_Y")]
-    [DefaultValue(0)]
-    public double Y { get; set; }
-
-    [Required]
-    [Column("WIDTH")]
-    [DefaultValue(0)]
-    public double Width { get; set; }
-
-    [Required]
-    [Column("HEIGHT")]
-    [DefaultValue(0)]
-    public double Height { get; set; }
-
-    [Required]
-    [Column("PAGE")]
-    [DefaultValue(1)]
-    public int Page { get; set; }
-
-    [Required]
-    [Column("REQUIRED")]
-    [DefaultValue(false)]
-    public bool Required { get; set; }
-
-    [Column("TOOLTIP")]
-    public string Tooltip { get; set; }
-
-    [Required]
-    [Column("READ_ONLY")]
-    [DefaultValue(false)]
-    public bool ReadOnly { get; set; }
-
-    [Required]
-    [Column("ANNOTATION_INDEX")]
-    [DefaultValue(0)]
-    public int AnnotationIndex { get; set; }
-
-    [Required]
-    [Column("ADDED_WHEN", TypeName = "datetime")]
-    [DefaultValue("GETDATE()")]
-    public DateTime AddedWhen { get; set; }
-
-    [Column("CHANGED_WHEN", TypeName = "datetime")]
-    public DateTime? ChangedWhen { get; set; }
-
-    [Column("CHANGED_WHO", TypeName = "nvarchar(100)")]
-    public string
-#if nullable
-        ?
-#endif
-        ChangedWho { get; set; }
-
-    [ForeignKey("DocumentId")]
-    public virtual Document Document { get; set; }
-
-    [ForeignKey("ReceiverId")]
-    public virtual Receiver
-#if nullable
-        ?
-#endif
-        Receiver { get; set; }
-
-    public virtual IEnumerable<ElementAnnotation>
-#if nullable
-        ?
-#endif
-        Annotations { get; set; }
-
-#if NETFRAMEWORK
-    [NotMapped]
-    public double Top => Math.Round(Y, 5);
-
-    [NotMapped]
-    public double Left => Math.Round(X, 5);
-#endif
-}
-
-#if NETFRAMEWORK
-    }
-#endif
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/EnvelopeGenerator.Domain/Interfaces/IHasAddedWho.cs b/EnvelopeGenerator.Domain/Interfaces/IHasAddedWho.cs
index 23018845..0ec5566b 100644
--- a/EnvelopeGenerator.Domain/Interfaces/IHasAddedWho.cs
+++ b/EnvelopeGenerator.Domain/Interfaces/IHasAddedWho.cs
@@ -1,7 +1,3 @@
-#if NETFRAMEWORK
-using System;
-#endif
-
 namespace EnvelopeGenerator.Domain.Interfaces
 {
     public interface IHasAddedWho