Inspectopedia 2025.2 Help

Nullability conflicts with annotations in hierarchy

Nullability of a member conflicts with attribute annotations in its hierarchy. When using a base member, an unexpected value might be passed or returned, e.g. a null value might be passed to a non-nullable parameter because a parameter of a base member allows it, or the return value might not be checked for null because a base member indicates that it should never return null.

Locating this inspection

By ID

Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

NullnessAnnotationConflictWithJetBrainsAnnotations
Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | C# | Potential Code Quality Issues

Suppressing Inspection

You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:

//noinspection NullnessAnnotationConflictWithJetBrainsAnnotations

More detailed instructions as well as other ways and options that you have can be found in the product documentation:

Inspection Details

By default bundled with:

JetBrains Rider 2025.2, Qodana for .NET 2025.2,

Last modified: 18 September 2025