9 Standard Methods ToC Previous Next

9.3 SetSubscriptionDurable ToC Previous Next

SetSubscriptionDurable Method is used to set a Subscription into a mode where MonitoredItem data and event queues are stored and delivered even if an OPC UA Client was disconnected for a longer time or the OPC UA Server was restarted. Its intended use is defined in OPC 10000-4.


[in] UInt32 subscriptionId
[in] UInt32 lifetimeInHours
[out] UInt32 revisedLifetimeInHours
Argument Description
subscriptionId Identifier of the Subscription.
lifetimeInHours The requested lifetime in hours for the durable Subscription.
revisedLifetimeInHours The revised lifetime in hours the Server applied to the durable Subscription.

Method Result Codes (defined in Call Service)

Result Code Description
Bad_SubscriptionIdInvalid Defined in OPC 10000-4
Bad_InvalidState Defined in OPC 10000-4
This is returned when a Subscription already contains MonitoredItems.
Bad_UserAccessDenied Defined in OPC 10000-4
The Method was not called in the context of the Session that owns the Subscription.

Table 96 specifies the AddressSpace representation for the SetSubscriptionDurable Method.

Table 96 – SetSubscriptionDurable Method AddressSpace Definition

Attribute Value
BrowseName SetSubscriptionDurable
References NodeClass BrowseName DataType TypeDefinition ModellingRule
HasProperty Variable InputArguments Argument[] PropertyType Mandatory
HasProperty Variable OutputArguments Argument[] PropertyType Mandatory

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