diff --git a/CocktailWeb/Data/DbDataContext.cs b/CocktailWeb/Data/DbDataContext.cs
index 241565c..527ac7d 100644
--- a/CocktailWeb/Data/DbDataContext.cs
+++ b/CocktailWeb/Data/DbDataContext.cs
@@ -35,18 +35,20 @@ namespace CocktailWeb.Data
                 new Filler() { Id = 1, Pos = 1, Type = Filler.FillerType.Pump },
                 new Filler() { Id = 2, Pos = 2, Type = Filler.FillerType.Pump },
                 new Filler() { Id = 3, Pos = 3, Type = Filler.FillerType.Pump },
-                new Filler() { Id = 4, Pos = 4, Type = Filler.FillerType.Pourer },
-                new Filler() { Id = 5, Pos = 5, Type = Filler.FillerType.Pourer },
-                new Filler() { Id = 6, Pos = 6, Type = Filler.FillerType.Pourer },
-                new Filler() { Id = 7, Pos = 7, Type = Filler.FillerType.Pourer },
-                new Filler() { Id = 8, Pos = 8, Type = Filler.FillerType.Pourer },
-                new Filler() { Id = 9, Pos = 9, Type = Filler.FillerType.Pourer },
-                new Filler() { Id = 10, Pos = 10, Type = Filler.FillerType.Pourer },
-                new Filler() { Id = 11, Pos = 11, Type = Filler.FillerType.Pourer },
-                new Filler() { Id = 12, Pos = 12, Type = Filler.FillerType.Pump },
-                new Filler() { Id = 13, Pos = 13, Type = Filler.FillerType.Pump },
-                new Filler() { Id = 14, Pos = 14, Type = Filler.FillerType.Pump }
+                new Filler() { Id = 4, Pos = 1, Type = Filler.FillerType.Pourer },
+                new Filler() { Id = 5, Pos = 2, Type = Filler.FillerType.Pourer },
+                new Filler() { Id = 6, Pos = 3, Type = Filler.FillerType.Pourer },
+                new Filler() { Id = 7, Pos = 4, Type = Filler.FillerType.Pourer },
+                new Filler() { Id = 8, Pos = 5, Type = Filler.FillerType.Pourer },
+                new Filler() { Id = 9, Pos = 6, Type = Filler.FillerType.Pourer },
+                new Filler() { Id = 10, Pos = 7, Type = Filler.FillerType.Pourer },
+                new Filler() { Id = 11, Pos = 8, Type = Filler.FillerType.Pourer },
+                new Filler() { Id = 12, Pos = 4, Type = Filler.FillerType.Pump },
+                new Filler() { Id = 13, Pos = 5, Type = Filler.FillerType.Pump },
+                new Filler() { Id = 14, Pos = 6, Type = Filler.FillerType.Pump }
                 );
+            modelBuilder.Entity<Filler>().HasIndex(p => new {p.Type, p.Pos}).IsUnique();
+
 
             modelBuilder.Entity<Glas>().ToTable("Glaeser");
 
diff --git a/CocktailWeb/Migrations/20240228183936_ModiyFillerUniquePosType.Designer.cs b/CocktailWeb/Migrations/20240228183936_ModiyFillerUniquePosType.Designer.cs
new file mode 100644
index 0000000..7b9419e
--- /dev/null
+++ b/CocktailWeb/Migrations/20240228183936_ModiyFillerUniquePosType.Designer.cs
@@ -0,0 +1,272 @@
+// <auto-generated />
+using System;
+using CocktailWeb.Data;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+#nullable disable
+
+namespace CocktailWeb.Migrations
+{
+    [DbContext(typeof(DbDataContext))]
+    [Migration("20240228183936_ModiyFillerUniquePosType")]
+    partial class ModiyFillerUniquePosType
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder.HasAnnotation("ProductVersion", "8.0.1");
+
+            modelBuilder.Entity("CocktailWeb.Data.Cocktail", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("Counter")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Ersteller")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("ImageURL")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Cocktails");
+                });
+
+            modelBuilder.Entity("CocktailWeb.Data.CocktailFlasche", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("CocktailID")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("FlascheID")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("Menge")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("Reihenfolge")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CocktailID");
+
+                    b.HasIndex("FlascheID");
+
+                    b.ToTable("CocktailFlaschen");
+                });
+
+            modelBuilder.Entity("CocktailWeb.Data.Filler", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int?>("FlascheId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("Pos")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("Type")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("FlascheId");
+
+                    b.HasIndex("Type", "Pos")
+                        .IsUnique();
+
+                    b.ToTable("Fillers");
+
+                    b.HasData(
+                        new
+                        {
+                            Id = 1,
+                            Pos = 1,
+                            Type = 0
+                        },
+                        new
+                        {
+                            Id = 2,
+                            Pos = 2,
+                            Type = 0
+                        },
+                        new
+                        {
+                            Id = 3,
+                            Pos = 3,
+                            Type = 0
+                        },
+                        new
+                        {
+                            Id = 4,
+                            Pos = 1,
+                            Type = 1
+                        },
+                        new
+                        {
+                            Id = 5,
+                            Pos = 2,
+                            Type = 1
+                        },
+                        new
+                        {
+                            Id = 6,
+                            Pos = 3,
+                            Type = 1
+                        },
+                        new
+                        {
+                            Id = 7,
+                            Pos = 4,
+                            Type = 1
+                        },
+                        new
+                        {
+                            Id = 8,
+                            Pos = 5,
+                            Type = 1
+                        },
+                        new
+                        {
+                            Id = 9,
+                            Pos = 6,
+                            Type = 1
+                        },
+                        new
+                        {
+                            Id = 10,
+                            Pos = 7,
+                            Type = 1
+                        },
+                        new
+                        {
+                            Id = 11,
+                            Pos = 8,
+                            Type = 1
+                        },
+                        new
+                        {
+                            Id = 12,
+                            Pos = 4,
+                            Type = 0
+                        },
+                        new
+                        {
+                            Id = 13,
+                            Pos = 5,
+                            Type = 0
+                        },
+                        new
+                        {
+                            Id = 14,
+                            Pos = 6,
+                            Type = 0
+                        });
+                });
+
+            modelBuilder.Entity("CocktailWeb.Data.Flasche", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<bool>("Alkoholisch")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("ImageURL")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Flaschen", (string)null);
+
+                    b.HasData(
+                        new
+                        {
+                            Id = 1,
+                            Alkoholisch = true,
+                            Name = "Jägermeister"
+                        },
+                        new
+                        {
+                            Id = 2,
+                            Alkoholisch = true,
+                            Name = "Wodka"
+                        });
+                });
+
+            modelBuilder.Entity("CocktailWeb.Data.Glas", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("Fuellmenge")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("ImageURL")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Glaeser", (string)null);
+                });
+
+            modelBuilder.Entity("CocktailWeb.Data.CocktailFlasche", b =>
+                {
+                    b.HasOne("CocktailWeb.Data.Cocktail", "Cocktail")
+                        .WithMany("Cocktailflaschen")
+                        .HasForeignKey("CocktailID")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("CocktailWeb.Data.Flasche", "Flasche")
+                        .WithMany()
+                        .HasForeignKey("FlascheID")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Cocktail");
+
+                    b.Navigation("Flasche");
+                });
+
+            modelBuilder.Entity("CocktailWeb.Data.Filler", b =>
+                {
+                    b.HasOne("CocktailWeb.Data.Flasche", "Flasche")
+                        .WithMany()
+                        .HasForeignKey("FlascheId");
+
+                    b.Navigation("Flasche");
+                });
+
+            modelBuilder.Entity("CocktailWeb.Data.Cocktail", b =>
+                {
+                    b.Navigation("Cocktailflaschen");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}
diff --git a/CocktailWeb/Migrations/20240228183936_ModiyFillerUniquePosType.cs b/CocktailWeb/Migrations/20240228183936_ModiyFillerUniquePosType.cs
new file mode 100644
index 0000000..96eae73
--- /dev/null
+++ b/CocktailWeb/Migrations/20240228183936_ModiyFillerUniquePosType.cs
@@ -0,0 +1,182 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace CocktailWeb.Migrations
+{
+    /// <inheritdoc />
+    public partial class ModiyFillerUniquePosType : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.UpdateData(
+                table: "Fillers",
+                keyColumn: "Id",
+                keyValue: 4,
+                column: "Pos",
+                value: 1);
+
+            migrationBuilder.UpdateData(
+                table: "Fillers",
+                keyColumn: "Id",
+                keyValue: 5,
+                column: "Pos",
+                value: 2);
+
+            migrationBuilder.UpdateData(
+                table: "Fillers",
+                keyColumn: "Id",
+                keyValue: 6,
+                column: "Pos",
+                value: 3);
+
+            migrationBuilder.UpdateData(
+                table: "Fillers",
+                keyColumn: "Id",
+                keyValue: 7,
+                column: "Pos",
+                value: 4);
+
+            migrationBuilder.UpdateData(
+                table: "Fillers",
+                keyColumn: "Id",
+                keyValue: 8,
+                column: "Pos",
+                value: 5);
+
+            migrationBuilder.UpdateData(
+                table: "Fillers",
+                keyColumn: "Id",
+                keyValue: 9,
+                column: "Pos",
+                value: 6);
+
+            migrationBuilder.UpdateData(
+                table: "Fillers",
+                keyColumn: "Id",
+                keyValue: 10,
+                column: "Pos",
+                value: 7);
+
+            migrationBuilder.UpdateData(
+                table: "Fillers",
+                keyColumn: "Id",
+                keyValue: 11,
+                column: "Pos",
+                value: 8);
+
+            migrationBuilder.UpdateData(
+                table: "Fillers",
+                keyColumn: "Id",
+                keyValue: 12,
+                column: "Pos",
+                value: 4);
+
+            migrationBuilder.UpdateData(
+                table: "Fillers",
+                keyColumn: "Id",
+                keyValue: 13,
+                column: "Pos",
+                value: 5);
+
+            migrationBuilder.UpdateData(
+                table: "Fillers",
+                keyColumn: "Id",
+                keyValue: 14,
+                column: "Pos",
+                value: 6);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Fillers_Type_Pos",
+                table: "Fillers",
+                columns: new[] { "Type", "Pos" },
+                unique: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropIndex(
+                name: "IX_Fillers_Type_Pos",
+                table: "Fillers");
+
+            migrationBuilder.UpdateData(
+                table: "Fillers",
+                keyColumn: "Id",
+                keyValue: 4,
+                column: "Pos",
+                value: 4);
+
+            migrationBuilder.UpdateData(
+                table: "Fillers",
+                keyColumn: "Id",
+                keyValue: 5,
+                column: "Pos",
+                value: 5);
+
+            migrationBuilder.UpdateData(
+                table: "Fillers",
+                keyColumn: "Id",
+                keyValue: 6,
+                column: "Pos",
+                value: 6);
+
+            migrationBuilder.UpdateData(
+                table: "Fillers",
+                keyColumn: "Id",
+                keyValue: 7,
+                column: "Pos",
+                value: 7);
+
+            migrationBuilder.UpdateData(
+                table: "Fillers",
+                keyColumn: "Id",
+                keyValue: 8,
+                column: "Pos",
+                value: 8);
+
+            migrationBuilder.UpdateData(
+                table: "Fillers",
+                keyColumn: "Id",
+                keyValue: 9,
+                column: "Pos",
+                value: 9);
+
+            migrationBuilder.UpdateData(
+                table: "Fillers",
+                keyColumn: "Id",
+                keyValue: 10,
+                column: "Pos",
+                value: 10);
+
+            migrationBuilder.UpdateData(
+                table: "Fillers",
+                keyColumn: "Id",
+                keyValue: 11,
+                column: "Pos",
+                value: 11);
+
+            migrationBuilder.UpdateData(
+                table: "Fillers",
+                keyColumn: "Id",
+                keyValue: 12,
+                column: "Pos",
+                value: 12);
+
+            migrationBuilder.UpdateData(
+                table: "Fillers",
+                keyColumn: "Id",
+                keyValue: 13,
+                column: "Pos",
+                value: 13);
+
+            migrationBuilder.UpdateData(
+                table: "Fillers",
+                keyColumn: "Id",
+                keyValue: 14,
+                column: "Pos",
+                value: 14);
+        }
+    }
+}