Создал проект с бизнесс-логикой, накинул зависимости

Bank/Bank.sln

@@ -7,7 +7,9 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "BankDataModels", "BankDataM
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "BankContracts", "BankContracts\BankContracts.csproj", "{59CDEA88-47C6-434D-84C6-40390E267858}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BankDatabaseImplement", "BankDatabaseImplement\BankDatabaseImplement.csproj", "{E038E32E-3601-4A3C-BB3D-301F9AE9B8E7}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "BankDatabaseImplement", "BankDatabaseImplement\BankDatabaseImplement.csproj", "{E038E32E-3601-4A3C-BB3D-301F9AE9B8E7}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BankBusinessLogic", "BankBusinessLogic\BankBusinessLogic.csproj", "{0C433C84-5E7C-4CB9-9072-E9B2F479FBF3}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -27,6 +29,10 @@ Global
 		{E038E32E-3601-4A3C-BB3D-301F9AE9B8E7}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{E038E32E-3601-4A3C-BB3D-301F9AE9B8E7}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{E038E32E-3601-4A3C-BB3D-301F9AE9B8E7}.Release|Any CPU.Build.0 = Release|Any CPU
+		{0C433C84-5E7C-4CB9-9072-E9B2F479FBF3}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{0C433C84-5E7C-4CB9-9072-E9B2F479FBF3}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{0C433C84-5E7C-4CB9-9072-E9B2F479FBF3}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{0C433C84-5E7C-4CB9-9072-E9B2F479FBF3}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

Bank/BankBusinessLogic/BankBusinessLogic.csproj

@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Folder Include="BusinessLogic\" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="DocumentFormat.OpenXml" Version="3.0.2" />
+    <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="7.0.1" />
+    <PackageReference Include="PdfSharp.MigraDoc.Standard" Version="1.51.15" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\BankContracts\BankContracts.csproj" />
+  </ItemGroup>
+
+</Project>

Bank/BankContracts/ViewModels/WithdrawalViewModel.cs

@@ -17,4 +17,5 @@ namespace BankContracts.ViewModels
         [DisplayName("Номер заявки")]
         public int? RequestId { get; set; }
         public Dictionary<int, IAccountModel> WithdrawalAccounts = new Dictionary<int, IAccountModel>();
+    }
 }