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Status code of an OPC UA function. More...

Import Statement: import QtOpcUa
Since: QtOpcUa 5.13


Detailed Description

This QML element contains information about the result status of an OPC UA action. The most common use case is to check if a call was successful

if (methodNode.resultCode.isGood) {
    // do something

Property Documentation

Status : enumeration

The names of this enumeration are matching the names from the standard, but the values are different.

Attributes of a status

Constant Description
Status.Good Everything is fine.
Status.BadUnexpectedError An unexpected error occurred.
Status.BadInternalError An internal error occurred as a result of a programming or configuration error.
Status.BadOutOfMemory Not enough memory to complete the operation.
Status.BadResourceUnavailable An operating system resource is not available.
Status.BadCommunicationError A low level communication error occurred.
Status.BadEncodingError Encoding halted because of invalid data in the objects being serialized.
Status.BadDecodingError Decoding halted because of invalid data in the stream.
Status.BadEncodingLimitsExceeded The message encoding/decoding limits imposed by the stack have been exceeded.
Status.BadRequestTooLarge The request message size exceeds limits set by the server.
Status.BadResponseTooLarge The response message size exceeds limits set by the client.
Status.BadUnknownResponse An unrecognized response was received from the server.
Status.BadTimeout The operation timed out.
Status.BadServiceUnsupported The server does not support the requested service.
Status.BadShutdown The operation was cancelled because the application is shutting down.
Status.BadServerNotConnected The operation could not complete because the client is not connected to the server.
Status.BadServerHalted The server has stopped and cannot process any requests.
Status.BadNothingToDo There was nothing to do because the client passed a list of operations with no elements.
Status.BadTooManyOperations The request could not be processed because it specified too many operations.
Status.BadTooManyMonitoredItems The request could not be processed because there are too many monitored items in the subscription.
Status.BadDataTypeIdUnknown The extension object cannot be (de)serialized because the data type id is not recognized.
Status.BadCertificateInvalid The certificate provided as a parameter is not valid.
Status.BadSecurityChecksFailed An error occurred verifying security.
Status.BadCertificateTimeInvalid The Certificate has expired or is not yet valid.
Status.BadCertificateIssuerTimeInvalid An Issuer Certificate has expired or is not yet valid.
Status.BadCertificateHostNameInvalid The HostName used to connect to a Server does not match a HostName in the Certificate.
Status.BadCertificateUriInvalid The URI specified in the ApplicationDescription does not match the URI in the Certificate.
Status.BadCertificateUseNotAllowed The Certificate may not be used for the requested operation.
Status.BadCertificateIssuerUseNotAllowed The Issuer Certificate may not be used for the requested operation.
Status.BadCertificateUntrusted The Certificate is not trusted.
Status.BadCertificateRevocationUnknown It was not possible to determine if the Certificate has been revoked.
Status.BadCertificateIssuerRevocationUnknown It was not possible to determine if the Issuer Certificate has been revoked.
Status.BadCertificateRevoked The certificate has been revoked.
Status.BadCertificateIssuerRevoked The issuer certificate has been revoked.
Status.BadCertificateChainIncomplete The certificate chain is incomplete.
Status.BadUserAccessDenied User does not have permission to perform the requested operation.
Status.BadIdentityTokenInvalid The user identity token is not valid.
Status.BadIdentityTokenRejected The user identity token is valid but the server has rejected it.
Status.BadSecureChannelIdInvalid The specified secure channel is no longer valid.
Status.BadInvalidTimestamp The timestamp is outside the range allowed by the server.
Status.BadNonceInvalid The nonce does appear to be not a random value or it is not the correct length.
Status.BadSessionIdInvalid The session id is not valid.
Status.BadSessionClosed The session was closed by the client.
Status.BadSessionNotActivated The session cannot be used because ActivateSession has not been called.
Status.BadSubscriptionIdInvalid The subscription id is not valid.
Status.BadRequestHeaderInvalid The header for the request is missing or invalid.
Status.BadTimestampsToReturnInvalid The timestamps to return parameter is invalid.
Status.BadRequestCancelledByClient The request was cancelled by the client.
Status.BadTooManyArguments Too many arguments were provided.
Status.GoodSubscriptionTransferred The subscription was transferred to another session.
Status.GoodCompletesAsynchronously The processing will complete asynchronously.
Status.GoodOverload Sampling has slowed down due to resource limitations.
Status.GoodClamped The value written was accepted but was clamped.
Status.BadNoCommunication Communication with the data source is defined, but not established, and there is no last known value available.
Status.BadWaitingForInitialData Waiting for the server to obtain values from the underlying data source.
Status.BadNodeIdInvalid The syntax of the node id is not valid.
Status.BadNodeIdUnknown The node id refers to a node that does not exist in the server address space.
Status.BadAttributeIdInvalid The attribute is not supported for the specified Node.
Status.BadIndexRangeInvalid The syntax of the index range parameter is invalid.
Status.BadIndexRangeNoData No data exists within the range of indexes specified.
Status.BadDataEncodingInvalid The data encoding is invalid.
Status.BadDataEncodingUnsupported The server does not support the requested data encoding for the node.
Status.BadNotReadable The access level does not allow reading or subscribing to the Node.
Status.BadNotWritable The access level does not allow writing to the Node.
Status.BadOutOfRange The value was out of range.
Status.BadNotSupported The requested operation is not supported.
Status.BadNotFound A requested item was not found or a search operation ended without success.
Status.BadObjectDeleted The object cannot be used because it has been deleted.
Status.BadNotImplemented Requested operation is not implemented.
Status.BadMonitoringModeInvalid The monitoring mode is invalid.
Status.BadMonitoredItemIdInvalid The monitoring item id does not refer to a valid monitored item.
Status.BadMonitoredItemFilterInvalid The monitored item filter parameter is not valid.
Status.BadMonitoredItemFilterUnsupported The server does not support the requested monitored item filter.
Status.BadFilterNotAllowed A monitoring filter cannot be used in combination with the attribute specified.
Status.BadStructureMissing A mandatory structured parameter was missing or null.
Status.BadEventFilterInvalid The event filter is not valid.
Status.BadContentFilterInvalid The content filter is not valid.
Status.BadFilterOperatorInvalid An unregognized operator was provided in a filter.
Status.BadFilterOperatorUnsupported A valid operator was provided, but the server does not provide support for this filter operator.
Status.BadFilterOperandCountMismatch The number of operands provided for the filter operator was less then expected for the operand provided.
Status.BadFilterOperandInvalid The operand used in a content filter is not valid.
Status.BadFilterElementInvalid The referenced element is not a valid element in the content filter.
Status.BadFilterLiteralInvalid The referenced literal is not a valid value.
Status.BadContinuationPointInvalid The continuation point provide is longer valid.
Status.BadNoContinuationPoints The operation could not be processed because all continuation points have been allocated.
Status.BadReferenceTypeIdInvalid The operation could not be processed because all continuation points have been allocated.
Status.BadBrowseDirectionInvalid The browse direction is not valid.
Status.BadNodeNotInView The node is not part of the view.
Status.BadServerUriInvalid The ServerUri is not a valid URI.
Status.BadServerNameMissing No ServerName was specified.
Status.BadDiscoveryUrlMissing No DiscoveryUrl was specified.
Status.BadSempahoreFileMissing The semaphore file specified by the client is not valid.
Status.BadRequestTypeInvalid The security token request type is not valid.
Status.BadSecurityModeRejected The security mode does not meet the requirements set by the Server.
Status.BadSecurityPolicyRejected The security policy does not meet the requirements set by the Server.
Status.BadTooManySessions The server has reached its maximum number of sessions.
Status.BadUserSignatureInvalid The user token signature is missing or invalid.
Status.BadApplicationSignatureInvalid The signature generated with the client certificate is missing or invalid.
Status.BadNoValidCertificates The client did not provide at least one software certificate that is valid and meets the profile requirements for the server.
Status.BadIdentityChangeNotSupported The Server does not support changing the user identity assigned to the session.
Status.BadRequestCancelledByRequest The request was cancelled by the client with the Cancel service.
Status.BadParentNodeIdInvalid The parent node id does not to refer to a valid node.
Status.BadReferenceNotAllowed The reference could not be created because it violates constraints imposed by the data model.
Status.BadNodeIdRejected The requested node id was reject because it was either invalid or server does not allow node ids to be specified by the client.
Status.BadNodeIdExists The requested node id is already used by another node.
Status.BadNodeClassInvalid The node class is not valid.
Status.BadBrowseNameInvalid The browse name is invalid.
Status.BadBrowseNameDuplicated The browse name is not unique among nodes that share the same relationship with the parent.
Status.BadNodeAttributesInvalid The node attributes are not valid for the node class.
Status.BadTypeDefinitionInvalid The type definition node id does not reference an appropriate type node.
Status.BadSourceNodeIdInvalid The source node id does not reference a valid node.
Status.BadTargetNodeIdInvalid The target node id does not reference a valid node.
Status.BadDuplicateReferenceNotAllowed he reference type between the nodes is already defined.
Status.BadInvalidSelfReference The server does not allow this type of self reference on this node.
Status.BadReferenceLocalOnly The reference type is not valid for a reference to a remote server.
Status.BadNoDeleteRights The server will not allow the node to be deleted.
Status.UncertainReferenceNotDeleted The server was not able to delete all target references.
Status.BadServerIndexInvalid The server index is not valid.
Status.BadViewIdUnknown The view id does not refer to a valid view node.
Status.BadViewTimestampInvalid The view timestamp is not available or not supported.
Status.BadViewParameterMismatch The view parameters are not consistent with each other.
Status.BadViewVersionInvalid The view version is not available or not supported.
Status.UncertainNotAllNodesAvailable The list of references may not be complete because the underlying system is not available.
Status.GoodResultsMayBeIncomplete The server should have followed a reference to a node in a remote server but did not. The result set may be incomplete.
Status.BadNotTypeDefinition The provided Nodeid was not a type definition nodeid.
Status.UncertainReferenceOutOfServer One of the references to follow in the relative path references to a node in the address space in another server.
Status.BadTooManyMatches The requested operation has too many matches to return.
Status.BadQueryTooComplex The requested operation requires too many resources in the server.
Status.BadNoMatch The requested operation has no match to return.
Status.BadMaxAgeInvalid The max age parameter is invalid.
Status.BadSecurityModeInsufficient The operation is not permitted over the current secure channel.
Status.BadHistoryOperationInvalid The history details parameter is not valid.
Status.BadHistoryOperationUnsupported The server does not support the requested operation.
Status.BadInvalidTimestampArgument The defined timestamp to return was invalid.
Status.BadWriteNotSupported The server not does support writing the combination of value, status and timestamps provided.
Status.BadTypeMismatch The value supplied for the attribute is not of the same type as the attribute's value.
Status.BadMethodInvalid The method id does not refer to a method for the specified object.
Status.BadArgumentsMissing The client did not specify all of the input arguments for the method.
Status.BadTooManySubscriptions The server has reached its maximum number of subscriptions.
Status.BadTooManyPublishRequests The server has reached the maximum number of queued publish requests.
Status.BadNoSubscription There is no subscription available for this session.
Status.BadSequenceNumberUnknown The sequence number is unknown to the server.
Status.BadMessageNotAvailable The requested notification message is no longer available.
Status.BadInsufficientClientProfile The Client of the current Session does not support one or more Profiles that are necessary for the Subscription.
Status.BadStateNotActive The sub-state machine is not currently active.
Status.BadTcpServerTooBusy The server cannot process the request because it is too busy.
Status.BadTcpMessageTypeInvalid The type of the message specified in the header invalid.
Status.BadTcpSecureChannelUnknown The SecureChannelId and/or TokenId are not currently in use.
Status.BadTcpMessageTooLarge The size of the message specified in the header is too large.
Status.BadTcpNotEnoughResources There are not enough resources to process the request.
Status.BadTcpInternalError An internal error occurred.
Status.BadTcpEndpointUrlInvalid The Server does not recognize the QueryString specified.
Status.BadRequestInterrupted The request could not be sent because of a network interruption.
Status.BadRequestTimeout Timeout occurred while processing the request.
Status.BadSecureChannelClosed The secure channel has been closed.
Status.BadSecureChannelTokenUnknown The token has expired or is not recognized.
Status.BadSequenceNumberInvalid The sequence number is not valid.
Status.BadProtocolVersionUnsupported The applications do not have compatible protocol versions.
Status.BadConfigurationError There is a problem with the configuration that affects the usefulness of the value.
Status.BadNotConnected The variable should receive its value from another variable, but has never been configured to do so.
Status.BadDeviceFailure There has been a failure in the device/data source that generates the value that has affected the value.
Status.BadSensorFailure There has been a failure in the sensor from which the value is derived by the device/data source.
Status.BadOutOfService The source of the data is not operational.
Status.BadDeadbandFilterInvalid The deadband filter is not valid.
Status.UncertainNoCommunicationLastUsableValue Communication to the data source has failed. The variable value is the last value that had a good quality.
Status.UncertainLastUsableValue Whatever was updating this value has stopped doing so.
Status.UncertainSubstituteValue The value is an operational value that was manually overwritten.
Status.UncertainInitialValue The value is an initial value for a variable that normally receives its value from another variable.
Status.UncertainSensorNotAccurate The value is at one of the sensor limits.
Status.UncertainEngineeringUnitsExceeded The value is outside of the range of values defined for this parameter.
Status.UncertainSubNormal The value is derived from multiple sources and has less than the required number of Good sources.
Status.GoodLocalOverride The value has been overridden.
Status.BadRefreshInProgress This Condition refresh failed, a Condition refresh operation is already in progress.
Status.BadConditionAlreadyDisabled This condition has already been disabled.
Status.BadConditionAlreadyEnabled This condition has already been enabled.
Status.BadConditionDisabled Property not available, this condition is disabled.
Status.BadEventIdUnknown The specified event id is not recognized.
Status.BadEventNotAcknowledgeable The event cannot be acknowledged.
Status.BadDialogNotActive The dialog condition is not active.
Status.BadDialogResponseInvalid The response is not valid for the dialog.
Status.BadConditionBranchAlreadyAcked The condition branch has already been acknowledged.
Status.BadConditionBranchAlreadyConfirmed The condition branch has already been confirmed.
Status.BadConditionAlreadyShelved The condition has already been shelved.
Status.BadConditionNotShelved The condition is not currently shelved.
Status.BadShelvingTimeOutOfRange The shelving time not within an acceptable range.
Status.BadNoData No data exists for the requested time range or event filter.
Status.BadBoundNotFoundNo data found to provide upper or lower bound value.
Status.BadBoundNotSupported The server cannot retrieve a bound for the variable.
Status.BadDataLost Data is missing due to collection started/stopped/lost.
Status.BadDataUnavailable Expected data is unavailable for the requested time range due to an un-mounted volume, an off-line archive or tape, or similar reason for temporary unavailability.
Status.BadEntryExists The data or event was not successfully inserted because a matching entry exists.
Status.BadNoEntryExists The data or event was not successfully updated because no matching entry exists.
Status.BadTimestampNotSupported The client requested history using a timestamp format the server does not support (i.e requested ServerTimestamp when server only supports SourceTimestamp).
Status.GoodEntryInserted The data or event was successfully inserted into the historical database.
Status.GoodEntryReplaced The data or event field was successfully replaced in the historical database.
Status.UncertainDataSubNormal The value is derived from multiple values and has less than the required number of Good values.
Status.GoodNoData No data exists for the requested time range or event filter.
Status.GoodMoreData The data or event field was successfully replaced in the historical database.
Status.BadAggregateListMismatch The requested number of Aggregates does not match the requested number of NodeIds.
Status.BadAggregateNotSupported The requested Aggregate is not support by the server.
Status.BadAggregateInvalidInputs The aggregate value could not be derived due to invalid data inputs.
Status.BadAggregateConfigurationRejected The aggregate configuration is not valid for specified node.
Status.GoodDataIgnored The request pecifies fields which are not valid for the EventType or cannot be saved by the historian
Status.BadRequestNotAllowed The request was rejected by the server because it did not meet the criteria set by the server.
Status.GoodEdited The value does not come from the real source and has been edited by the server.
Status.GoodPostActionFailed There was an error in execution of these post-actions.
Status.UncertainDominantValueChanged The related EngineeringUnit has been changed but the Variable Value is still provided based on the previous unit.
Status.GoodDependentValueChanged A dependent value has been changed but the change has not been applied to the device.
Status.BadDominantValueChanged The related EngineeringUnit has been changed but this change has not been applied to the device. The Variable Value is still dependent on the previous unit but its status is currently Bad.
Status.UncertainDependentValueChanged A dependent value has been changed but the change has not been applied to the device. The quality of the dominant variable is uncertain.
Status.BadDependentValueChanged A dependent value has been changed but the change has not been applied to the device. The quality of the dominant variable is Bad.
Status.GoodCommunicationEvent The communication layer has raised an event.
Status.GoodShutdownEvent The system is shutting down.
Status.GoodCallAgain The operation is not finished and needs to be called again.
Status.GoodNonCriticalTimeout A non-critical timeout occurred.
Status.BadInvalidArgument One or more arguments are invalid.
Status.BadConnectionRejected Could not establish a network connection to remote server.
Status.BadDisconnect The server has disconnected from the client.
Status.BadConnectionClosed The network connection has been closed.
Status.BadInvalidState The operation cannot be completed because the object is closed, uninitialized or in some other invalid state.
Status.BadEndOfStream Cannot move beyond end of the stream.
Status.BadNoDataAvailable No data is currently available for reading from a non-blocking stream.
Status.BadWaitingForResponse The asynchronous operation is waiting for a response.
Status.BadOperationAbandoned The asynchronous operation was abandoned by the caller.
Status.BadExpectedStreamToBlock The stream did not return all data requested (possibly because it is a non-blocking stream).
Status.BadWouldBlock Non blocking behavior is required and the operation would block.
Status.BadSyntaxError A value had an invalid syntax.
Status.BadMaxConnectionsReached The operation could not be finished because all available connections are in use.

isBad : bool

Returns whether the result status is a failure.

isGood : bool

Returns whether the result status is a success.

status : Status.Status

Returns the exact status code. This allows to handle the status specifically.

if (resultStatus.status == QtOpcUa.Status.BadTimeout) {
    // try again

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