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Docs > Debugging, Testing and Error Handling > Automatic Code Error Diagnostics > XAF0017: Incompatible assemblies must not be added to the same project
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V24.2
.NET Framework 4.6.2+
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XAF0001: Implement XPO business class constructors correctly
XAF0002: XPO business class properties should not be overridden
XAF0003: XPO business classes should be public
XAF0004: Implement XAF controller constructors correctly
XAF0005: XAF controller classes should be public
XAF0006: Invalid target platform. Change the target platform to "Any CPU" in the project or solution properties
XAF0007: The Build Action property of the XAFML file must be set to Embedded resource
XAF0008: The current Visual Studio version is not supported or .NET 6.0+ SDK is not installed
XAF0009: Properties decorated with the RuleRequiredFieldAttribute should be of nullable or reference type
XAF0010: Set the DelayedAttribute.UpdateModifiedOnly property to True
XAF0011: Implement the delayed property correctly
XAF0012: Avoid calling the XafApplication.CreateObjectSpace() method overload without the Type parameter
XAF0013: Avoid reading the XafApplication.ConnectionString property
XAF0014: The property with the Association attribute must have a correct unique pair
XAF0015: Association must not have the Aggregated attribute if it is paired to the "many" end of the association
XAF0016: Descendants of NonPersistentBaseObject and NonPersistentLiteObject must be decorated with the DomainComponent attribute
XAF0017: Incompatible assemblies must not be added to the same project
XAF0018: Avoid creating a new Session/UnitOfWork with parameterless constructors in XPO-based projects
XAF0019: Apply ExplicitLoadingAttribute only to reference properties
XAF0020: Avoid applying NonPersistentAttribute to properties without a public setter
XAF0021: Create new controllers correctly
XAF0022: Avoid using the ShowViewStrategy.ShowView method
XAF0023: Do not implement IObjectSpaceLink in the XPO classes
XAF0024: Do not implement IXafEntityObject in the XPO classes
XAF0025: Use the corresponding XAF ORM-agnostic or Entity Framework attribute
XAF0026: Use the supported version of EF Core packages
XAF0027: Do not apply DomainComponentAttribute to the XPO business class
XAF0028: Use the corresponding XPO attribute
XAF0029: Use the enclosing property name in a method call
XAF0030: Use generic members without the type parameter to declare your association property
XAF0031: Add the UseChangeTrackingProxies() call for automatic UI updates
XAF0032: Use the explicit syntax to create an instance of the CriteriaOperator class
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Error Handling in ASP.NET Core Blazor and Web Forms
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XAF0017: Incompatible assemblies must not be added to the same project

Severity: Warning

Assemblies from different platform-specific applications (WinApplication, WebApplication, BlazorApplication) must not be referenced in the same project. For example, do not reference the DevExpress.ExpressApp.Dashboards.Blazor.v22.1.dll and DevExpress.ExpressApp.Dashboards.Win.v22.1.dll assemblies in the same project.

How to Fix

Reference only those packages that are actually used in your project. Remove platform-specific assembly references from the MySolution\Module project.