Uses of Package
org.axonframework.common

Packages that use org.axonframework.common

Package	Description
io.axoniq.framework.axonserver.connector.api	Root package for the Axon Server Connector.
io.axoniq.framework.axonserver.connector.api.command	Root package for the Axon Server Connector.
io.axoniq.framework.axonserver.connector.api.query	Root package for the Axon Server Connector.
io.axoniq.framework.axonserver.connector.event	Part of the Axon Server Connector module.
io.axoniq.framework.axonserver.connector.query	Part of the Axon Server Connector module.
io.axoniq.framework.axonserver.connector.shared	Part of the Axon Server Connector module.
io.axoniq.framework.messaging.deadletter	Part of the Axon Messaging module.
io.axoniq.framework.messaging.eventhandling.deadletter	Part of the Axon Messaging module.
io.axoniq.framework.messaging.multitenancy.annotation	Contains classes related to multitenancy-specific annotation logic.
io.axoniq.framework.messaging.multitenancy.api	Contains the multi-tenancy API, like the tenant descriptor, tenant provider, and tenant resolution contracts.
io.axoniq.framework.messaging.multitenancy.axonserver.api	Part of the Axoniq Framework multi-tenancy module.
io.axoniq.framework.messaging.multitenancy.axonserver.commandhandling	Part of the Axoniq Framework multi-tenancy module.
io.axoniq.framework.messaging.multitenancy.axonserver.eventsourcing	Part of the Axoniq Framework multi-tenancy module.
io.axoniq.framework.messaging.multitenancy.axonserver.eventstreaming	Axon Server specific multi-tenant event streaming infrastructure, giving each tenant its own persistent stream and labelling the events it delivers with the tenant they belong to.
io.axoniq.framework.messaging.multitenancy.axonserver.queryhandling	Part of the Axoniq Framework multi-tenancy module.
io.axoniq.framework.messaging.multitenancy.deadletter	Integrates dead-letter queue handling with multi-tenant event processing.
io.axoniq.framework.messaging.multitenancy.eventsourcing	Package containing multitenancy support for event sourcing components.
io.axoniq.framework.messaging.queryhandling.distributed	Part of the Axon Messaging module.
io.axoniq.framework.messaging.transformation	Part of the Axoniq Messaging folder.
io.axoniq.framework.messaging.transformation.events	Part of the Axoniq Messaging folder.
io.axoniq.framework.springcloud.command	The command side of the Spring Cloud connector: the connector distributing commands, and the HTTP transport carrying them between members of the cluster.
io.axoniq.framework.springcloud.discovery	Discovery of the capabilities of the ServiceInstances reported by Spring Cloud Discovery.
io.axoniq.framework.springcloud.query	The query side of the Spring Cloud connector: the connector distributing queries and subscription queries, and the HTTP transport carrying them between members of the cluster.
io.axoniq.framework.springcloud.shared	The parts of the Spring Cloud connector that the command side and the query side both rely on.
io.axoniq.framework.workflow.dsl.api	Author-facing DSL entry points, step-definition value types, event conditions, and workflow lifecycle exceptions.
io.axoniq.framework.workflow.runtime.execution	Internal implementation of the workflow execution engine: the WorkflowEngine, its scheduling, state and storage, checkpointing/replay support, cancellation coordination, and the delegates implementing individual step primitives.
org.axonframework.common	Contains common utility classes needed in different components of the framework.
org.axonframework.common.caching	Caching abstractions and helpers.
org.axonframework.common.configuration	Component configuration, registry, and lifecycle support.
org.axonframework.common.infra	Infrastructure for component description and introspection.
org.axonframework.common.jdbc	JDBC utilities and connection handling.
org.axonframework.common.lifecycle	Component lifecycle management types.
org.axonframework.common.lock	Locking and concurrency utilities.
org.axonframework.common.property	Property access and reflection helpers.
org.axonframework.conversion	Classes related to message conversion in Axon Framework.
org.axonframework.deadline	Deadline support carried over from Axon Framework 4, to keep deadlines that were scheduled before migrating firing while a project moves off this API.
org.axonframework.deadline.dbscheduler	A deadline manager backed by db-scheduler, storing deadlines in the task layout of Axon Framework 4.13.
org.axonframework.deadline.jobrunr	A deadline manager backed by JobRunr, storing deadlines in the job layout of Axon Framework 4.13.
org.axonframework.deadline.quartz	A deadline manager backed by a Quartz scheduler, storing deadlines in the job layout of Axon Framework 4.13.
org.axonframework.eventsourcing.eventstore	Definitions and implementations of the Event store, the mechanism that can load event streams and append events to them.
org.axonframework.eventsourcing.eventstore.tracing	Event-store tracing decorators and event-sourcing-specific SpanAttributesProvider implementations.
org.axonframework.extension.spring.authorization	Part of the Axon Extension module.
org.axonframework.extension.spring.config.annotation	Part of the Axon Extension module.
org.axonframework.extension.spring.messaging	Part of the Axon Extension module.
org.axonframework.extensions.mongo	Access to the Mongo collections the components in this module read and write, through MongoTemplate and its default implementation.
org.axonframework.extensions.mongo.eventhandling.saga.repository	A Mongo-backed SagaStore, storing each saga together with its associations as a single document described by SagaEntry.
org.axonframework.messaging	The Axon Framework 4 scope types, kept at their Axon Framework 4 package: the current Scope of a running Saga handler, how a scope is described (ScopeDescriptor), and the components a message can be sent to within a scope (ScopeAware).
org.axonframework.messaging.commandhandling	Classes that implement the concept of command handling using explicit command objects.
org.axonframework.messaging.core	Classes related to message processing in Axon Framework.
org.axonframework.messaging.core.annotation	Part of the Axon Messaging module.
org.axonframework.messaging.core.configuration.reflection	Part of the Axon Messaging module
org.axonframework.messaging.core.interception	Part of the Axon Messaging module.
org.axonframework.messaging.core.interception.annotation	Part of the Axon Messaging module.
org.axonframework.messaging.core.unitofwork.annotation	Part of the Axon Messaging module.
org.axonframework.messaging.eventhandling	Package for event handling components in Axon Framework.
org.axonframework.messaging.eventhandling.annotation	Part of the Axon Messaging module.
org.axonframework.messaging.eventhandling.configuration	Part of the Axon Messaging module.
org.axonframework.messaging.eventhandling.processing	Part of the Axon Messaging module.
org.axonframework.messaging.eventhandling.processing.streaming.pooled	Part of the Axon Messaging module.
org.axonframework.messaging.eventhandling.processing.streaming.token.store	Part of the Axon Messaging module.
org.axonframework.messaging.eventhandling.processing.subscribing	Part of the Axon Messaging module.
org.axonframework.messaging.eventhandling.replay	Part of the Axon Messaging module.
org.axonframework.messaging.eventhandling.tracing	Tracing decorators for event handling components.
org.axonframework.messaging.queryhandling	Package for query handling components in Axon Framework.
org.axonframework.messaging.tracing.annotation	Annotation-pipeline tracing support for axon-messaging: the handler enhancer producing per-method handler spans, registered conditionally on the HandlerDefinition component by the tracing configuration defaults.
org.axonframework.modelling	Root package for Axon Modelling.
org.axonframework.modelling.entity	Part of the Axon Modelling module.
org.axonframework.modelling.repository	Part of the Axon Modelling module.
org.axonframework.modelling.saga	Association values, the means by which an event is correlated to the saga instances that should handle it.
org.axonframework.modelling.saga.repository	The SagaStore abstraction and the decorators over it.
org.axonframework.modelling.saga.repository.jdbc	A JDBC-backed SagaStore, together with the SQL dialects it can speak.
org.axonframework.modelling.saga.repository.jpa	A JPA-backed SagaStore, storing sagas as SagaEntry rows and their associations as AssociationValueEntry rows.
org.axonframework.test	Root package for Axon Test.
org.axonframework.test.deadline	Test support for the deadlines carried by axoniq-legacy.
org.axonframework.test.fixture	Part of the Axon Test module.
org.axonframework.test.matchers	Part of the Axon Test module.

Classes in org.axonframework.common used by io.axoniq.framework.axonserver.connector.api

Class	Description
AxonConfigurationException	Exception indicating that a configuration error has been made in the Axon configuration.
AxonException	Base exception for all Axon Framework related exceptions.

Classes in org.axonframework.common used by io.axoniq.framework.axonserver.connector.api.command

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.
AxonNonTransientException	Exception indicating an error has been caused that cannot be resolved without intervention.

Classes in org.axonframework.common used by io.axoniq.framework.axonserver.connector.api.query

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.
AxonNonTransientException	Exception indicating an error has been caused that cannot be resolved without intervention.

Classes in org.axonframework.common used by io.axoniq.framework.axonserver.connector.event

Class	Description
Registration	Interface that provides a mechanism to cancel a registration.

Classes in org.axonframework.common used by io.axoniq.framework.axonserver.connector.query

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.

Classes in org.axonframework.common used by io.axoniq.framework.axonserver.connector.shared

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.

Classes in org.axonframework.common used by io.axoniq.framework.messaging.deadletter

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.

Classes in org.axonframework.common used by io.axoniq.framework.messaging.eventhandling.deadletter

Class	Description
AxonConfigurationException	Exception indicating that a configuration error has been made in the Axon configuration.

Classes in org.axonframework.common used by io.axoniq.framework.messaging.multitenancy.annotation

Class	Description
Priority	Indicates the relative priority of the annotated component.

Classes in org.axonframework.common used by io.axoniq.framework.messaging.multitenancy.api

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.
AxonNonTransientException	Exception indicating an error has been caused that cannot be resolved without intervention.
Registration	Interface that provides a mechanism to cancel a registration.

Classes in org.axonframework.common used by io.axoniq.framework.messaging.multitenancy.axonserver.api

Class	Description
Registration	Interface that provides a mechanism to cancel a registration.

Classes in org.axonframework.common used by io.axoniq.framework.messaging.multitenancy.axonserver.commandhandling

Class	Description
Registration	Interface that provides a mechanism to cancel a registration.

Classes in org.axonframework.common used by io.axoniq.framework.messaging.multitenancy.axonserver.eventsourcing

Class	Description
Registration	Interface that provides a mechanism to cancel a registration.

Classes in org.axonframework.common used by io.axoniq.framework.messaging.multitenancy.axonserver.eventstreaming

Class	Description
Registration	Interface that provides a mechanism to cancel a registration.

Classes in org.axonframework.common used by io.axoniq.framework.messaging.multitenancy.axonserver.queryhandling

Class	Description
Registration	Interface that provides a mechanism to cancel a registration.

Classes in org.axonframework.common used by io.axoniq.framework.messaging.multitenancy.deadletter

Class	Description
Registration	Interface that provides a mechanism to cancel a registration.

Classes in org.axonframework.common used by io.axoniq.framework.messaging.multitenancy.eventsourcing

Class	Description
Registration	Interface that provides a mechanism to cancel a registration.

Classes in org.axonframework.common used by io.axoniq.framework.messaging.queryhandling.distributed

Class	Description
Registration	Interface that provides a mechanism to cancel a registration.

Classes in org.axonframework.common used by io.axoniq.framework.messaging.transformation

Class	Description
AxonConfigurationException	Exception indicating that a configuration error has been made in the Axon configuration.
AxonException	Base exception for all Axon Framework related exceptions.
AxonNonTransientException	Exception indicating an error has been caused that cannot be resolved without intervention.

Classes in org.axonframework.common used by io.axoniq.framework.messaging.transformation.events

Class	Description
Registration	Interface that provides a mechanism to cancel a registration.
TypeReference	Represents a reference to a type of component, allowing for generic types to be specified without casting errors.

Classes in org.axonframework.common used by io.axoniq.framework.springcloud.command

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.

Classes in org.axonframework.common used by io.axoniq.framework.springcloud.discovery

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.

Classes in org.axonframework.common used by io.axoniq.framework.springcloud.query

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.
AxonNonTransientException	Exception indicating an error has been caused that cannot be resolved without intervention.

Classes in org.axonframework.common used by io.axoniq.framework.springcloud.shared

Class	Description
Registration	Interface that provides a mechanism to cancel a registration.

Classes in org.axonframework.common used by io.axoniq.framework.workflow.dsl.api

Class	Description
TypeReference	Represents a reference to a type of component, allowing for generic types to be specified without casting errors.

Classes in org.axonframework.common used by io.axoniq.framework.workflow.runtime.execution

Class	Description
TypeReference	Represents a reference to a type of component, allowing for generic types to be specified without casting errors.

Classes in org.axonframework.common used by org.axonframework.common

Class	Description
AxonConfigurationException	Exception indicating that a configuration error has been made in the Axon configuration.
AxonException	Base exception for all Axon Framework related exceptions.
AxonNonTransientException	Exception indicating an error has been caused that cannot be resolved without intervention.
DirectExecutor	Simple executor implementation that runs a given Runnable immediately in the calling thread.
IdentifierFactory	Abstract Factory class that provides access to an IdentifierFactory implementation.
IdentifierValidator	Validates the structure of an object passed as Aggregate Identifier.
TypeReference	Represents a reference to a type of component, allowing for generic types to be specified without casting errors.

Classes in org.axonframework.common used by org.axonframework.common.caching

Class	Description
Registration	Interface that provides a mechanism to cancel a registration.

Classes in org.axonframework.common used by org.axonframework.common.configuration

Class	Description
AxonConfigurationException	Exception indicating that a configuration error has been made in the Axon configuration.
TypeReference	Represents a reference to a type of component, allowing for generic types to be specified without casting errors.

Classes in org.axonframework.common used by org.axonframework.common.infra

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.
AxonNonTransientException	Exception indicating an error has been caused that cannot be resolved without intervention.

Classes in org.axonframework.common used by org.axonframework.common.jdbc

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.
AxonTransientException	Exception indicating an error occurred that might be resolved by retrying the operation that caused the exception.

Classes in org.axonframework.common used by org.axonframework.common.lifecycle

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.
AxonNonTransientException	Exception indicating an error has been caused that cannot be resolved without intervention.

Classes in org.axonframework.common used by org.axonframework.common.lock

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.
AxonTransientException	Exception indicating an error occurred that might be resolved by retrying the operation that caused the exception.

Classes in org.axonframework.common used by org.axonframework.common.property

Class	Description
AxonConfigurationException	Exception indicating that a configuration error has been made in the Axon configuration.
AxonException	Base exception for all Axon Framework related exceptions.
AxonNonTransientException	Exception indicating an error has been caused that cannot be resolved without intervention.

Classes in org.axonframework.common used by org.axonframework.conversion

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.
AxonNonTransientException	Exception indicating an error has been caused that cannot be resolved without intervention.

Classes in org.axonframework.common used by org.axonframework.deadline

Class	Description
AxonConfigurationException	Exception indicating that a configuration error has been made in the Axon configuration.
AxonException	Base exception for all Axon Framework related exceptions.
AxonTransientException	Exception indicating an error occurred that might be resolved by retrying the operation that caused the exception.
Registration	Interface that provides a mechanism to cancel a registration.
TypeReference	Represents a reference to a type of component, allowing for generic types to be specified without casting errors.

Classes in org.axonframework.common used by org.axonframework.deadline.dbscheduler

Class	Description
AxonConfigurationException	Exception indicating that a configuration error has been made in the Axon configuration.
AxonException	Base exception for all Axon Framework related exceptions.

Classes in org.axonframework.common used by org.axonframework.deadline.jobrunr

Class	Description
AxonConfigurationException	Exception indicating that a configuration error has been made in the Axon configuration.

Classes in org.axonframework.common used by org.axonframework.deadline.quartz

Class	Description
AxonConfigurationException	Exception indicating that a configuration error has been made in the Axon configuration.

Classes in org.axonframework.common used by org.axonframework.eventsourcing.eventstore

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.
AxonNonTransientException	Exception indicating an error has been caused that cannot be resolved without intervention.
Registration	Interface that provides a mechanism to cancel a registration.

Classes in org.axonframework.common used by org.axonframework.eventsourcing.eventstore.tracing

Class	Description
Registration	Interface that provides a mechanism to cancel a registration.

Classes in org.axonframework.common used by org.axonframework.extension.spring.authorization

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.
AxonNonTransientException	Exception indicating an error has been caused that cannot be resolved without intervention.

Classes in org.axonframework.common used by org.axonframework.extension.spring.config.annotation

Class	Description
Priority	Indicates the relative priority of the annotated component.

Classes in org.axonframework.common used by org.axonframework.extension.spring.messaging

Class	Description
Registration	Interface that provides a mechanism to cancel a registration.

Classes in org.axonframework.common used by org.axonframework.extensions.mongo

Class	Description
AxonConfigurationException	Exception indicating that a configuration error has been made in the Axon configuration.

Classes in org.axonframework.common used by org.axonframework.extensions.mongo.eventhandling.saga.repository

Class	Description
AxonConfigurationException	Exception indicating that a configuration error has been made in the Axon configuration.

Classes in org.axonframework.common used by org.axonframework.messaging

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.
AxonTransientException	Exception indicating an error occurred that might be resolved by retrying the operation that caused the exception.

Classes in org.axonframework.common used by org.axonframework.messaging.commandhandling

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.
AxonTransientException	Exception indicating an error occurred that might be resolved by retrying the operation that caused the exception.
TypeReference	Represents a reference to a type of component, allowing for generic types to be specified without casting errors.

Classes in org.axonframework.common used by org.axonframework.messaging.core

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.
AxonNonTransientException	Exception indicating an error has been caused that cannot be resolved without intervention.
AxonTransientException	Exception indicating an error occurred that might be resolved by retrying the operation that caused the exception.
Registration	Interface that provides a mechanism to cancel a registration.
TypeReference	Represents a reference to a type of component, allowing for generic types to be specified without casting errors.

Classes in org.axonframework.common used by org.axonframework.messaging.core.annotation

Class	Description
AxonConfigurationException	Exception indicating that a configuration error has been made in the Axon configuration.
AxonException	Base exception for all Axon Framework related exceptions.
AxonNonTransientException	Exception indicating an error has been caused that cannot be resolved without intervention.
Priority	Indicates the relative priority of the annotated component.

Classes in org.axonframework.common used by org.axonframework.messaging.core.configuration.reflection

Class	Description
Priority	Indicates the relative priority of the annotated component.

Classes in org.axonframework.common used by org.axonframework.messaging.core.interception

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.
AxonNonTransientException	Exception indicating an error has been caused that cannot be resolved without intervention.

Classes in org.axonframework.common used by org.axonframework.messaging.core.interception.annotation

Class	Description
Priority	Indicates the relative priority of the annotated component.

Classes in org.axonframework.common used by org.axonframework.messaging.core.unitofwork.annotation

Class	Description
Priority	Indicates the relative priority of the annotated component.

Classes in org.axonframework.common used by org.axonframework.messaging.eventhandling

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.
Registration	Interface that provides a mechanism to cancel a registration.
TypeReference	Represents a reference to a type of component, allowing for generic types to be specified without casting errors.

Classes in org.axonframework.common used by org.axonframework.messaging.eventhandling.annotation

Class	Description
Priority	Indicates the relative priority of the annotated component.

Classes in org.axonframework.common used by org.axonframework.messaging.eventhandling.configuration

Class	Description
AxonConfigurationException	Exception indicating that a configuration error has been made in the Axon configuration.

Classes in org.axonframework.common used by org.axonframework.messaging.eventhandling.processing

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.

Classes in org.axonframework.common used by org.axonframework.messaging.eventhandling.processing.streaming.pooled

Class	Description
AxonConfigurationException	Exception indicating that a configuration error has been made in the Axon configuration.

Classes in org.axonframework.common used by org.axonframework.messaging.eventhandling.processing.streaming.token.store

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.
AxonTransientException	Exception indicating an error occurred that might be resolved by retrying the operation that caused the exception.

Classes in org.axonframework.common used by org.axonframework.messaging.eventhandling.processing.subscribing

Class	Description
AxonConfigurationException	Exception indicating that a configuration error has been made in the Axon configuration.

Classes in org.axonframework.common used by org.axonframework.messaging.eventhandling.replay

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.
AxonNonTransientException	Exception indicating an error has been caused that cannot be resolved without intervention.
TypeReference	Represents a reference to a type of component, allowing for generic types to be specified without casting errors.

Classes in org.axonframework.common used by org.axonframework.messaging.eventhandling.tracing

Class	Description
Registration	Interface that provides a mechanism to cancel a registration.

Classes in org.axonframework.common used by org.axonframework.messaging.queryhandling

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.
AxonNonTransientException	Exception indicating an error has been caused that cannot be resolved without intervention.
TypeReference	Represents a reference to a type of component, allowing for generic types to be specified without casting errors.

Classes in org.axonframework.common used by org.axonframework.messaging.tracing.annotation

Class	Description
Priority	Indicates the relative priority of the annotated component.

Classes in org.axonframework.common used by org.axonframework.modelling

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.
AxonTransientException	Exception indicating an error occurred that might be resolved by retrying the operation that caused the exception.

Classes in org.axonframework.common used by org.axonframework.modelling.entity

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.
AxonNonTransientException	Exception indicating an error has been caused that cannot be resolved without intervention.

Classes in org.axonframework.common used by org.axonframework.modelling.repository

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.
AxonNonTransientException	Exception indicating an error has been caused that cannot be resolved without intervention.

Classes in org.axonframework.common used by org.axonframework.modelling.saga

Class	Description
AxonConfigurationException	Exception indicating that a configuration error has been made in the Axon configuration.
AxonException	Base exception for all Axon Framework related exceptions.
AxonNonTransientException	Exception indicating an error has been caused that cannot be resolved without intervention.
AxonTransientException	Exception indicating an error occurred that might be resolved by retrying the operation that caused the exception.

Classes in org.axonframework.common used by org.axonframework.modelling.saga.repository

Class	Description
AxonConfigurationException	Exception indicating that a configuration error has been made in the Axon configuration.
AxonException	Base exception for all Axon Framework related exceptions.
AxonNonTransientException	Exception indicating an error has been caused that cannot be resolved without intervention.

Classes in org.axonframework.common used by org.axonframework.modelling.saga.repository.jdbc

Class	Description
AxonConfigurationException	Exception indicating that a configuration error has been made in the Axon configuration.

Classes in org.axonframework.common used by org.axonframework.modelling.saga.repository.jpa

Class	Description
AxonConfigurationException	Exception indicating that a configuration error has been made in the Axon configuration.

Classes in org.axonframework.common used by org.axonframework.test

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.
AxonNonTransientException	Exception indicating an error has been caused that cannot be resolved without intervention.
Priority	Indicates the relative priority of the annotated component.

Classes in org.axonframework.common used by org.axonframework.test.deadline

Class	Description
Registration	Interface that provides a mechanism to cancel a registration.

Classes in org.axonframework.common used by org.axonframework.test.fixture

Class	Description
Registration	Interface that provides a mechanism to cancel a registration.

Classes in org.axonframework.common used by org.axonframework.test.matchers

Class	Description
AxonException	Base exception for all Axon Framework related exceptions.
AxonNonTransientException	Exception indicating an error has been caused that cannot be resolved without intervention.