diff --git a/FSSiegen.Diagram1.view b/FSSiegen.Diagram1.view
index 16b9c4d..6d6e126 100644
--- a/FSSiegen.Diagram1.view
+++ b/FSSiegen.Diagram1.view
@@ -950,14 +950,33 @@
                       <TypeName>EntityDeveloper.EnumTypeMember</TypeName>
                     </Oid>
                   </Model>
+                  <Model xsi:type="EnumTypeMemberVwModel">
+                    <CustomProperties>
+                      <OID>51</OID>
+                      <Parent>44</Parent>
+                    </CustomProperties>
+                    <Children />
+                    <Location>
+                      <X>0.5 px</X>
+                      <Y>108.5 px</Y>
+                    </Location>
+                    <Size>
+                      <Width>144 px</Width>
+                      <Height>18 px</Height>
+                    </Size>
+                    <Oid xsi:type="SchemaModelOID">
+                      <Path>4c471e6c-91e8-489e-8a3d-41bee5acf5e3</Path>
+                      <TypeName>EntityDeveloper.EnumTypeMember</TypeName>
+                    </Oid>
+                  </Model>
                 </Children>
                 <Size>
                   <Width>145 px</Width>
-                  <Height>108 px</Height>
+                  <Height>126 px</Height>
                 </Size>
                 <MaxSize>
                   <Width>0 px</Width>
-                  <Height>109 px</Height>
+                  <Height>127 px</Height>
                 </MaxSize>
               </Model>
             </Children>
@@ -967,15 +986,15 @@
             </Location>
             <Size>
               <Width>150 px</Width>
-              <Height>157 px</Height>
+              <Height>175 px</Height>
             </Size>
             <MinSize>
               <Width>100 px</Width>
-              <Height>157 px</Height>
+              <Height>175 px</Height>
             </MinSize>
             <MaxSize>
               <Width>800 px</Width>
-              <Height>157 px</Height>
+              <Height>175 px</Height>
             </MaxSize>
             <Ports />
             <Oid xsi:type="SchemaModelOID">
@@ -986,11 +1005,11 @@
           </Model>
           <Model xsi:type="AssociationVwModel">
             <CustomProperties>
-              <OID>51</OID>
+              <OID>52</OID>
               <OutModel>19</OutModel>
               <InModel>29</InModel>
-              <OutPort>52</OutPort>
-              <InPort>53</InPort>
+              <OutPort>53</OutPort>
+              <InPort>54</InPort>
               <Parent>0</Parent>
             </CustomProperties>
             <PortAnchors>
@@ -1002,7 +1021,7 @@
                 <Anchors>Top Bottom</Anchors>
                 <Align>Right</Align>
                 <CustomProperties>
-                  <OID>52</OID>
+                  <OID>53</OID>
                   <PortType>FloatAnchor</PortType>
                 </CustomProperties>
               </Port>
@@ -1014,7 +1033,7 @@
                 <Anchors>Top Bottom</Anchors>
                 <Align>Left</Align>
                 <CustomProperties>
-                  <OID>53</OID>
+                  <OID>54</OID>
                   <PortType>FloatAnchor</PortType>
                 </CustomProperties>
               </Port>
diff --git a/FSSiegen.efml b/FSSiegen.efml
index a8cdae6..815d434 100644
--- a/FSSiegen.efml
+++ b/FSSiegen.efml
@@ -16,6 +16,7 @@
       <Member Name="PrintPass" Value="40" p1:Guid="c259e9b3-519f-42ba-99f7-80ea5b268a6c" />
       <Member Name="PdfPass" Value="50" p1:Guid="9cc2e8a4-4b74-4aaa-860c-7b7a8b643174" />
       <Member Name="Verify" Value="60" p1:Guid="21fa1cd1-2e3c-4a85-bd1b-5780549d0835" />
+      <Member Name="Complete" Value="70" p1:Guid="4c471e6c-91e8-489e-8a3d-41bee5acf5e3" />
     </EnumType>
   </class>
   <class name="User" entity-set="Users" p1:Guid="f956d4e9-7523-4b77-96be-10cbe0cc6929">
@@ -54,7 +55,7 @@
     <property name="Created" type="DateTime" p1:ValidateRequired="true" p1:Guid="12d616f2-eee0-4dbc-9a24-fecb7e65e9ba">
       <column name="" />
     </property>
-    <property name="Memo" type="String" p1:ValidateRequired="true" p1:Guid="e00e58d3-7b35-4f5e-84fe-09d228801093">
+    <property name="Memo" type="String" p1:nullable="True" p1:ValidateRequired="false" p1:Guid="e00e58d3-7b35-4f5e-84fe-09d228801093">
       <column name="" />
     </property>
   </class>
diff --git a/FoodsharingSiegen.Contracts/Entity/Interaction.Generated.cs b/FoodsharingSiegen.Contracts/Entity/Interaction.Generated.cs
index 886bc1a..3da418e 100644
--- a/FoodsharingSiegen.Contracts/Entity/Interaction.Generated.cs
+++ b/FoodsharingSiegen.Contracts/Entity/Interaction.Generated.cs
@@ -2,7 +2,7 @@
 // This is auto-generated code.
 //------------------------------------------------------------------------------
 // This code was generated by Entity Developer tool using EF Core template.
-// Code is generated on: 02.04.2022 10:49:14
+// Code is generated on: 02.04.2022 14:16:15
 //
 // Changes to this file may cause incorrect behavior and will be lost if
 // the code is regenerated.
diff --git a/FoodsharingSiegen.Contracts/Entity/InteractionType.cs b/FoodsharingSiegen.Contracts/Entity/InteractionType.cs
index 289597d..e00ed46 100644
--- a/FoodsharingSiegen.Contracts/Entity/InteractionType.cs
+++ b/FoodsharingSiegen.Contracts/Entity/InteractionType.cs
@@ -2,7 +2,7 @@
 // This is auto-generated code.
 //------------------------------------------------------------------------------
 // This code was generated by Entity Developer tool using EF Core template.
-// Code is generated on: 02.04.2022 10:49:14
+// Code is generated on: 02.04.2022 14:16:15
 //
 // Changes to this file may cause incorrect behavior and will be lost if
 // the code is regenerated.
diff --git a/FoodsharingSiegen.Contracts/Entity/Prospect.Generated.cs b/FoodsharingSiegen.Contracts/Entity/Prospect.Generated.cs
index 798c6a7..5b7e38d 100644
--- a/FoodsharingSiegen.Contracts/Entity/Prospect.Generated.cs
+++ b/FoodsharingSiegen.Contracts/Entity/Prospect.Generated.cs
@@ -2,7 +2,7 @@
 // This is auto-generated code.
 //------------------------------------------------------------------------------
 // This code was generated by Entity Developer tool using EF Core template.
-// Code is generated on: 02.04.2022 10:49:14
+// Code is generated on: 02.04.2022 14:16:15
 //
 // Changes to this file may cause incorrect behavior and will be lost if
 // the code is regenerated.
diff --git a/FoodsharingSiegen.Contracts/Entity/Prospect.cs b/FoodsharingSiegen.Contracts/Entity/Prospect.cs
index 462181d..b045bb9 100644
--- a/FoodsharingSiegen.Contracts/Entity/Prospect.cs
+++ b/FoodsharingSiegen.Contracts/Entity/Prospect.cs
@@ -1,15 +1,8 @@
-using System;
-using System.Collections.Generic;
-using System.ComponentModel;
-using System.Data;
-using System.Data.Common;
-using System.Linq;
-using System.Linq.Expressions;
-
-namespace FoodsharingSiegen.Contracts.Entity
+namespace FoodsharingSiegen.Contracts.Entity
 {
 
     public partial class Prospect
     {
+        public bool Complete => Interactions?.Any(x => x.Type == InteractionType.Complete) == true;
     }
 }
diff --git a/FoodsharingSiegen.Contracts/Entity/User.Generated.cs b/FoodsharingSiegen.Contracts/Entity/User.Generated.cs
index 1810ddd..35807f7 100644
--- a/FoodsharingSiegen.Contracts/Entity/User.Generated.cs
+++ b/FoodsharingSiegen.Contracts/Entity/User.Generated.cs
@@ -2,7 +2,7 @@
 // This is auto-generated code.
 //------------------------------------------------------------------------------
 // This code was generated by Entity Developer tool using EF Core template.
-// Code is generated on: 02.04.2022 10:49:14
+// Code is generated on: 02.04.2022 14:16:15
 //
 // Changes to this file may cause incorrect behavior and will be lost if
 // the code is regenerated.
diff --git a/FoodsharingSiegen.Contracts/Entity/UserType.cs b/FoodsharingSiegen.Contracts/Entity/UserType.cs
index cb7a5e2..2ca6fc0 100644
--- a/FoodsharingSiegen.Contracts/Entity/UserType.cs
+++ b/FoodsharingSiegen.Contracts/Entity/UserType.cs
@@ -2,7 +2,7 @@
 // This is auto-generated code.
 //------------------------------------------------------------------------------
 // This code was generated by Entity Developer tool using EF Core template.
-// Code is generated on: 02.04.2022 10:49:14
+// Code is generated on: 02.04.2022 14:16:15
 //
 // Changes to this file may cause incorrect behavior and will be lost if
 // the code is regenerated.
diff --git a/FoodsharingSiegen.Server/Data/FsContext.Generated.cs b/FoodsharingSiegen.Server/Data/FsContext.Generated.cs
index 1bf9874..bf958e0 100644
--- a/FoodsharingSiegen.Server/Data/FsContext.Generated.cs
+++ b/FoodsharingSiegen.Server/Data/FsContext.Generated.cs
@@ -2,7 +2,7 @@
 // This is auto-generated code.
 //------------------------------------------------------------------------------
 // This code was generated by Entity Developer tool using EF Core template.
-// Code is generated on: 02.04.2022 10:49:14
+// Code is generated on: 02.04.2022 14:16:15
 //
 // Changes to this file may cause incorrect behavior and will be lost if
 // the code is regenerated.
@@ -117,7 +117,7 @@ namespace FoodsharingSiegen.Server.Data
             modelBuilder.Entity<Prospect>().Property(x => x.Name).HasColumnName(@"Name").IsRequired().ValueGeneratedNever();
             modelBuilder.Entity<Prospect>().Property(x => x.ProgressId).HasColumnName(@"ProgressId").IsRequired().ValueGeneratedNever();
             modelBuilder.Entity<Prospect>().Property(x => x.Created).HasColumnName(@"Created").IsRequired().ValueGeneratedNever();
-            modelBuilder.Entity<Prospect>().Property(x => x.Memo).HasColumnName(@"Memo").IsRequired().ValueGeneratedNever();
+            modelBuilder.Entity<Prospect>().Property(x => x.Memo).HasColumnName(@"Memo").ValueGeneratedNever();
             modelBuilder.Entity<Prospect>().HasKey(@"Id");
         }
 
diff --git a/FoodsharingSiegen.Server/Migrations/20220402121638_memonull.Designer.cs b/FoodsharingSiegen.Server/Migrations/20220402121638_memonull.Designer.cs
new file mode 100644
index 0000000..1123305
--- /dev/null
+++ b/FoodsharingSiegen.Server/Migrations/20220402121638_memonull.Designer.cs
@@ -0,0 +1,156 @@
+// <auto-generated />
+using System;
+using FoodsharingSiegen.Server.Data;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+#nullable disable
+
+namespace FoodsharingSiegen.Server.Migrations
+{
+    [DbContext(typeof(FsContext))]
+    [Migration("20220402121638_memonull")]
+    partial class memonull
+    {
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder.HasAnnotation("ProductVersion", "6.0.1");
+
+            modelBuilder.Entity("FoodsharingSiegen.Contracts.Entity.Interaction", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("TEXT")
+                        .HasColumnName("Id");
+
+                    b.Property<DateTime>("Date")
+                        .HasColumnType("TEXT")
+                        .HasColumnName("Date");
+
+                    b.Property<string>("Info")
+                        .HasColumnType("TEXT")
+                        .HasColumnName("Info");
+
+                    b.Property<Guid>("ProspectId")
+                        .HasColumnType("TEXT")
+                        .HasColumnName("ProspectId");
+
+                    b.Property<int>("Type")
+                        .HasColumnType("INTEGER")
+                        .HasColumnName("Type");
+
+                    b.Property<Guid>("UserId")
+                        .HasColumnType("TEXT")
+                        .HasColumnName("UserId");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ProspectId");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Interactions", (string)null);
+                });
+
+            modelBuilder.Entity("FoodsharingSiegen.Contracts.Entity.Prospect", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("TEXT")
+                        .HasColumnName("Id");
+
+                    b.Property<DateTime>("Created")
+                        .HasColumnType("TEXT")
+                        .HasColumnName("Created");
+
+                    b.Property<int>("FsId")
+                        .HasColumnType("INTEGER")
+                        .HasColumnName("FsId");
+
+                    b.Property<string>("Memo")
+                        .HasColumnType("TEXT")
+                        .HasColumnName("Memo");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("TEXT")
+                        .HasColumnName("Name");
+
+                    b.Property<Guid>("ProgressId")
+                        .HasColumnType("TEXT")
+                        .HasColumnName("ProgressId");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Prospects", (string)null);
+                });
+
+            modelBuilder.Entity("FoodsharingSiegen.Contracts.Entity.User", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("TEXT")
+                        .HasColumnName("Id");
+
+                    b.Property<DateTime>("Created")
+                        .HasColumnType("TEXT")
+                        .HasColumnName("Created");
+
+                    b.Property<string>("Mail")
+                        .IsRequired()
+                        .HasColumnType("TEXT")
+                        .HasColumnName("Mail");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("TEXT")
+                        .HasColumnName("Name");
+
+                    b.Property<int>("Type")
+                        .HasColumnType("INTEGER")
+                        .HasColumnName("Type");
+
+                    b.Property<bool>("Verified")
+                        .HasColumnType("INTEGER")
+                        .HasColumnName("Verified");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Users", (string)null);
+                });
+
+            modelBuilder.Entity("FoodsharingSiegen.Contracts.Entity.Interaction", b =>
+                {
+                    b.HasOne("FoodsharingSiegen.Contracts.Entity.Prospect", "Prospect")
+                        .WithMany("Interactions")
+                        .HasForeignKey("ProspectId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("FoodsharingSiegen.Contracts.Entity.User", "User")
+                        .WithMany("Interactions")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Prospect");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("FoodsharingSiegen.Contracts.Entity.Prospect", b =>
+                {
+                    b.Navigation("Interactions");
+                });
+
+            modelBuilder.Entity("FoodsharingSiegen.Contracts.Entity.User", b =>
+                {
+                    b.Navigation("Interactions");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}
diff --git a/FoodsharingSiegen.Server/Migrations/20220402121638_memonull.cs b/FoodsharingSiegen.Server/Migrations/20220402121638_memonull.cs
new file mode 100644
index 0000000..8e9305e
--- /dev/null
+++ b/FoodsharingSiegen.Server/Migrations/20220402121638_memonull.cs
@@ -0,0 +1,33 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace FoodsharingSiegen.Server.Migrations
+{
+    public partial class memonull : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AlterColumn<string>(
+                name: "Memo",
+                table: "Prospects",
+                type: "TEXT",
+                nullable: true,
+                oldClrType: typeof(string),
+                oldType: "TEXT");
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AlterColumn<string>(
+                name: "Memo",
+                table: "Prospects",
+                type: "TEXT",
+                nullable: false,
+                defaultValue: "",
+                oldClrType: typeof(string),
+                oldType: "TEXT",
+                oldNullable: true);
+        }
+    }
+}
diff --git a/FoodsharingSiegen.Server/Migrations/FsContextModelSnapshot.cs b/FoodsharingSiegen.Server/Migrations/FsContextModelSnapshot.cs
index f2af9f2..fed5f16 100644
--- a/FoodsharingSiegen.Server/Migrations/FsContextModelSnapshot.cs
+++ b/FoodsharingSiegen.Server/Migrations/FsContextModelSnapshot.cs
@@ -69,7 +69,6 @@ namespace FoodsharingSiegen.Server.Migrations
                         .HasColumnName("FsId");
 
                     b.Property<string>("Memo")
-                        .IsRequired()
                         .HasColumnType("TEXT")
                         .HasColumnName("Memo");
 
diff --git a/FoodsharingSiegen.Server/app.db-shm b/FoodsharingSiegen.Server/app.db-shm
deleted file mode 100644
index f751056..0000000
Binary files a/FoodsharingSiegen.Server/app.db-shm and /dev/null differ
diff --git a/FoodsharingSiegen.Server/app.db-wal b/FoodsharingSiegen.Server/app.db-wal
deleted file mode 100644
index 77612e4..0000000
Binary files a/FoodsharingSiegen.Server/app.db-wal and /dev/null differ