gradle/gradle · error · IllegalArgumentException

Type '%s' is not managed

Error message

Type '%s' is not managed

What it means

Error "Type '%s' is not managed" thrown in gradle/gradle.

Source

Thrown at platforms/core-configuration/model-core/src/main/java/org/gradle/model/internal/typeregistration/BaseInstanceFactory.java:93

            registration = new TypeRegistration<S>(publicType);
            registrations.put(publicType, registration);
        }
        return new TypeRegistrationBuilderImpl<S>(source, registration);
    }

    @Override @Nullable
    public <S extends PUBLIC> ImplementationInfo getImplementationInfo(ModelType<S> publicType) {
        ImplementationRegistration<S> implementationRegistration = getImplementationRegistration(publicType);
        if (implementationRegistration == null) {
            return null;
        }
        return new ImplementationInfoImpl<S>(publicType, implementationRegistration, getInternalViews(publicType));
    }

    @Override
    public <S extends PUBLIC> ImplementationInfo getManagedSubtypeImplementationInfo(final ModelType<S> publicType) {
        if (!isManaged(publicType)) {
            throw new IllegalArgumentException(String.format("Type '%s' is not managed", publicType));
        }
        final MutableReference<ImplementationInfoImpl<S>> implementationInfo = MutableReference.empty();
        walkTypeHierarchy(publicType.getConcreteClass(), new RegistrationHierarchyVisitor<S>() {
            @Override
            protected void visitRegistration(TypeRegistration<? extends PUBLIC> registration) {
                if (registration == null || registration.implementationRegistration == null) {
                    return;
                }
                ImplementationInfoImpl<S> currentImplementationInfo = implementationInfo.get();
                if (currentImplementationInfo == null || currentImplementationInfo.implementationRegistration.getImplementationType().isAssignableFrom(registration.implementationRegistration.getImplementationType())) {
                    implementationInfo.set(new ImplementationInfoImpl<S>(publicType, registration.implementationRegistration, getInternalViews(publicType)));
                }
            }
        });

        if (implementationInfo.get() == null) {
            throw new IllegalStateException(String.format("Factory registration for '%s' is invalid because it doesn't extend an interface with a default implementation", publicType));
        }

View on GitHub (pinned to 534f27719b)

Solutions

1. The type is not a managed type. Annotate the interface with @Managed or use a type registered as managed.

When it happens

Trigger: Thrown at platforms/core-configuration/model-core/src/main/java/org/gradle/model/internal/typeregistration/BaseInstanceFactory.java:93 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of gradle/gradle@534f27719b (2026-08-22). Data as JSON: /api/errors/a002bebaf482f488. Report an issue: GitHub.