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Service Bus

Connect to Azure Service Bus to send and receive messages. You can perform actions such as send to queue, send to topic, receive from queue, receive from subscription, etc.

This connector is available in the following products and regions:

Service Class Regions
Logic Apps Standard All Logic Apps regions and Integration Service Environments (ISEs)
Power Automate Premium All Power Automate regions except the following:
     -   US Government (GCC High)
Power Apps Premium All Power Apps regions except the following:
     -   US Government (GCC High)
Contact
Name Microsoft
URL Microsoft LogicApps Support
Microsoft Power Automate Support
Microsoft Power Apps Support
Connector Metadata
Publisher Microsoft
Website https://azure.microsoft.com/services/service-bus/

General known issues and limitations

  • Infinite loops

    Use caution when you select both a trigger and action that have the same connector type and use them to work with the same entity, such as a queue or topic subscription. This combination can create an infinite loop, which results in a workflow that never ends.

    For example, suppose your workflow uses a Service Bus trigger that returns a newly received message in a queue and follows that trigger with a Service Bus action that sends a message back to the same queue. This pattern can create an infinite loop, causing an unending workflow.

  • Limit on saved sessions in connector cache

    Per Service Bus messaging entity, such as a subscription or topic, the Service Bus connector can save up to 1,500 unique sessions at a time to the connector cache. If the session count exceeds this limit, old sessions are removed from the cache. For more information, see Message sessions.

  • Long-polling triggers

    For the Azure Service Bus managed connector, all triggers are long-polling. This trigger type processes all the messages and then waits 30 seconds for more messages to appear in the queue or topic subscription. If no messages appear in 30 seconds, the trigger run is skipped. Otherwise, the trigger continues reading messages until the queue or topic subscription is empty. The next trigger poll is based on the recurrence interval specified in the trigger's properties.

Microsoft Entra ID authentication

To use Microsoft Entra ID authentication, the user account requires a specific role assignment. For more information, see Assign an Azure role for access rights - Azure Service Bus.

Managed identity authentication

Currently, managed identity authentication is supported only for Azure Logic Apps.

  • To use a managed identity that authenticates access from your logic app workflow to your Service Bus namespace and messaging entity, make sure that you assign role permissions at the corresponding levels. For example, to access a queue, the managed identity requires a role that has the necessary permissions for that queue.

  • Each managed identity that accesses a different messaging entity should have a separate connection to that entity. If you use different Azure Service Bus actions to send and receive messages, and those actions require different permissions, make sure to use different connections.

To enable a managed identity for use with Azure Service Bus, follow these high-level steps:

  1. Enable or create the managed identity for your logic app resource. For more information, see Authenticate access to Azure resources with managed identities in Azure Logic Apps.

  2. Give the identity access to Azure Service Bus resources. For more information, see Assign an Azure role for access rights - Azure Service Bus

  3. For a user-assigned identity, add the identity to the logic app resource. For more information about managed identities in Azure Logic Apps, see Authenticate access to Azure resources using managed identities in Azure Logic Apps

Connector in-depth

This article describes the operations for the Azure Service Bus managed connector, which is available for Azure Logic Apps, Power Automate, and Power Apps. The Azure Service Bus built-in connector is available only for Standard logic app workflows in Azure Logic Apps.

For more information about the Azure Service Bus built-in connector and managed connector in Azure Logic Apps, see Connect to Azure Service Bus from workflows in Azure Logic Apps.

Creating a connection

The connector supports the following authentication types:

Access Key Provide connection string to access your Azure Service Bus. All regions except Azure Government and Department of Defense (DoD) in Azure Government and US Government (GCC) and US Government (GCC-High) Not shareable
Access Key (Azure Government) Provide connection string to access your Azure Service Bus. Azure Government and Department of Defense (DoD) in Azure Government and US Government (GCC) and US Government (GCC-High) only Not shareable
Azure AD Integrated Use Azure Active Directory to access your Azure Service Bus. MOONCAKE only Not shareable
Azure AD Integrated (Azure Government) Use Azure Active Directory to access your Azure Service Bus. Azure Government and Department of Defense (DoD) in Azure Government and US Government (GCC) and US Government (GCC-High) only Not shareable
Logic Apps Managed Identity Create a connection using a LogicApps Managed Identity LOGICAPPS only Shareable
Microsoft Entra ID Integrated Use Microsoft Entra ID to access your Azure Service Bus. All regions except Azure Government and Department of Defense (DoD) in Azure Government and MOONCAKE and US Government (GCC) and US Government (GCC-High) Not shareable
Default [DEPRECATED] This option is only for older connections without an explicit authentication type, and is only provided for backward compatibility. All regions Not shareable

Access Key

Auth ID: connectionstringauth

Applicable: All regions except Azure Government and Department of Defense (DoD) in Azure Government and US Government (GCC) and US Government (GCC-High)

Provide connection string to access your Azure Service Bus.

This is not shareable connection. If the power app is shared with another user, another user will be prompted to create new connection explicitly.

Name Type Description Required
Connection String securestring Azure Service Bus Connection String True

Access Key (Azure Government)

Auth ID: connectionstringauth

Applicable: Azure Government and Department of Defense (DoD) in Azure Government and US Government (GCC) and US Government (GCC-High) only

Provide connection string to access your Azure Service Bus.

This is not shareable connection. If the power app is shared with another user, another user will be prompted to create new connection explicitly.

Name Type Description Required
Connection String securestring Azure Service Bus Connection String True

Azure AD Integrated

Auth ID: aadAuth

Applicable: MOONCAKE only

Use Azure Active Directory to access your Azure Service Bus.

This is not shareable connection. If the power app is shared with another user, another user will be prompted to create new connection explicitly.

Name Type Description Required
Namespace Endpoint string Provide Service Bus Namespace Endpoint (e.g: sb://testsb.servicebus.windows.net/) True

Azure AD Integrated (Azure Government)

Auth ID: aadAuth

Applicable: Azure Government and Department of Defense (DoD) in Azure Government and US Government (GCC) and US Government (GCC-High) only

Use Azure Active Directory to access your Azure Service Bus.

This is not shareable connection. If the power app is shared with another user, another user will be prompted to create new connection explicitly.

Name Type Description Required
Namespace Endpoint string Provide Service Bus Namespace Endpoint (e.g: sb://testsb.servicebus.windows.net/) True

Logic Apps Managed Identity

Auth ID: managedIdentityAuth

Applicable: LOGICAPPS only

Create a connection using a LogicApps Managed Identity

This is shareable connection. If the power app is shared with another user, connection is shared as well. For more information, please see the Connectors overview for canvas apps - Power Apps | Microsoft Docs

Name Type Description Required
LogicApps Managed Identity managedIdentity Sign in with a Logic Apps Managed Identity True
Namespace Endpoint string Provide Service Bus Namespace Endpoint (e.g: sb://testsb.servicebus.windows.net/) True

Microsoft Entra ID Integrated

Auth ID: aadAuth

Applicable: All regions except Azure Government and Department of Defense (DoD) in Azure Government and MOONCAKE and US Government (GCC) and US Government (GCC-High)

Use Microsoft Entra ID to access your Azure Service Bus.

This is not shareable connection. If the power app is shared with another user, another user will be prompted to create new connection explicitly.

Name Type Description Required
Namespace Endpoint string Provide Service Bus Namespace Endpoint (e.g: sb://testsb.servicebus.windows.net/) True

Default [DEPRECATED]

Applicable: All regions

This option is only for older connections without an explicit authentication type, and is only provided for backward compatibility.

This is not shareable connection. If the power app is shared with another user, another user will be prompted to create new connection explicitly.

Name Type Description Required
Connection String securestring Azure Service Bus Connection String True

Throttling Limits

Name Calls Renewal Period
API calls per connection 6000 60 seconds

Actions

Abandon the message in a queue

The operation abandons a message in a queue.

Abandon the message in a topic subscription

The operation abandons a message in a topic subscription.

Close a session in a queue

The operation closes a session in a queue.

Close a session in the topic

The operation closes a session in the topic.

Complete the message in a queue

The operation completes a message in a queue.

Complete the message in a topic subscription

The operation completes a message in a topic subscription.

Create a topic subscription

The operation creates a topic subscription.

Dead-letter the message in a queue

The operation moves the message to the Dead-Letter Queue.

Dead-letter the message in a topic subscription

The operation moves the message to the topic Dead-Letter Queue.

Defer the message in a queue

The operation defers a message in a queue.

Defer the message in a topic subscription

The operation defers a message in a topic subscription.

Delete a topic subscription

The operation deletes a topic subscription.

Get deferred message from a queue

The operation gets a deferred message from a queue.

Get deferred message from a topic subscription

The operation gets a deferred message from a topic subscription.

Get messages from a queue (peek-lock)

The operation receives messages from a queue with peek-lock. If maximum message count is not provided, it reads 20 messages.

Get messages from a topic subscription (peek-lock)

The operation receives messages from a topic subscription with peek-lock. If maximum message count is not provided, it reads 20 messages.

Renew lock on the message in a queue

The operation renews lock on a message in a queue.

Renew lock on the message in a topic subscription

The operation renews lock on a message in a topic subscription.

Renew lock on the session in a queue

The operation renews a session in a queue.

Renew lock on the session in a topic subscription

The operation renews a session in a topic subscription.

Send message

This operation sends a message to a queue or topic.

Send one or more messages

This operation sends one or more messages to a queue or topic.

Abandon the message in a queue

The operation abandons a message in a queue.

Parameters

Name Key Required Type Description
Queue name
queueName True string

Name of the queue

Lock token of the message
lockToken True string

Lock token of the message to abandon

Queue type
queueType string

Queue type - Main or DeadLetter

Session id
sessionId string

Session id

Abandon the message in a topic subscription

The operation abandons a message in a topic subscription.

Parameters

Name Key Required Type Description
Topic name
topicName True string

Name of the topic

Topic subscription name
subscriptionName True string

Name of the topic subscription

Lock token of the message
lockToken True string

Lock token of the message to abandon

Subscription type
subscriptionType string

Subscription type - Main or DeadLetter

Session id
sessionId string

Session id

Close a session in a queue

The operation closes a session in a queue.

Parameters

Name Key Required Type Description
Queue name
queueName True string

Name of a queue

Session id
sessionId True string

Session id

Close a session in the topic

The operation closes a session in the topic.

Parameters

Name Key Required Type Description
Topic name
topicName True string

Name of the topic

Topic subscription name
subscriptionName True string

Name of the topic subscription

Session id
sessionId True string

Session id

Complete the message in a queue

The operation completes a message in a queue.

Parameters

Name Key Required Type Description
Queue name
queueName True string

Name of the queue

Lock token of the message
lockToken True string

Lock token of the message to complete

Queue type
queueType string

Queue type - Main or DeadLetter

Session id
sessionId string

Session id

Complete the message in a topic subscription

The operation completes a message in a topic subscription.

Parameters

Name Key Required Type Description
Topic name
topicName True string

Name of the topic

Topic subscription name
subscriptionName True string

Name of the topic subscription

Lock token of the message
lockToken True string

Lock token of the message to complete

Subscription type
subscriptionType string

Subscription type - Main or DeadLetter

Session id
sessionId string

Session id

Create a topic subscription

The operation creates a topic subscription.

Parameters

Name Key Required Type Description
Topic name
topicName True string

Name of the topic

Topic subscription name
subscriptionName True string

Name of the topic subscription

Filter
subscriptionFilter True dynamic

Subscription filter

Filter type
subscriptionFilterType string

Filter type

Returns

The topic subscription.

Dead-letter the message in a queue

The operation moves the message to the Dead-Letter Queue.

Parameters

Name Key Required Type Description
Queue name
queueName True string

Name of the queue

Lock token of the message
lockToken True string

Lock token of the message to dead-letter

Session id
sessionId string

Session id

Dead letter reason
deadLetterReason string

Dead letter reason

Dead letter error description
deadLetterErrorDescription string

Dead letter error description

Dead-letter the message in a topic subscription

The operation moves the message to the topic Dead-Letter Queue.

Parameters

Name Key Required Type Description
Topic name
topicName True string

Name of the topic

Topic subscription name
subscriptionName True string

Name of the topic subscription

Lock token of the message
lockToken True string

Lock token of the message to dead-letter

Session id
sessionId string

Session id

Dead letter reason
deadLetterReason string

Dead letter reason

Dead letter error description
deadLetterErrorDescription string

Dead letter error description

Defer the message in a queue

The operation defers a message in a queue.

Parameters

Name Key Required Type Description
Queue name
queueName True string

Name of the queue

Lock token of the message
lockToken True string

Lock token of the message to defer

Queue type
queueType string

Queue type - Main or DeadLetter

Session id
sessionId string

Session id

Defer the message in a topic subscription

The operation defers a message in a topic subscription.

Parameters

Name Key Required Type Description
Topic name
topicName True string

Name of the topic

Topic subscription name
subscriptionName True string

Name of the topic subscription

Lock token of the message
lockToken True string

Lock token of the message to defer

Subscription type
subscriptionType string

Subscription type - Main or DeadLetter

Session id
sessionId string

Session id

Delete a topic subscription

The operation deletes a topic subscription.

Parameters

Name Key Required Type Description
Topic name
topicName True string

Name of the topic

Topic subscription name
subscriptionName True string

Name of the topic subscription

Get deferred message from a queue

The operation gets a deferred message from a queue.

Parameters

Name Key Required Type Description
Queue name
queueName True string

Name of the queue

Sequence number of message
sequenceNumber True integer

Sequence number of message

Queue type
queueType string

Queue type - Main or DeadLetter

Session id
sessionId string

Session id

Returns

Service Bus Message

Get deferred message from a topic subscription

The operation gets a deferred message from a topic subscription.

Parameters

Name Key Required Type Description
Topic name
topicName True string

Name of the topic

Topic subscription name
subscriptionName True string

Name of the topic subscription

Sequence number of message
sequenceNumber True integer

Sequence number of message

Subscription type
subscriptionType string

Queue type - Main or DeadLetter

Session id
sessionId string

Session id

Returns

Service Bus Message

Get messages from a queue (peek-lock)

The operation receives messages from a queue with peek-lock. If maximum message count is not provided, it reads 20 messages.

Parameters

Name Key Required Type Description
Queue name
queueName True string

Name of the queue

Maximum message count
maxMessageCount integer

The maximum number of messages to return in the batch

Queue type
queueType string

Queue type - Main or DeadLetter

Session id
sessionId string

Session id

Returns

Get messages from a topic subscription (peek-lock)

The operation receives messages from a topic subscription with peek-lock. If maximum message count is not provided, it reads 20 messages.

Parameters

Name Key Required Type Description
Topic name
topicName True string

Name of the topic

Topic subscription name
subscriptionName True string

Name of the topic subscription

Maximum message count
maxMessageCount integer

The maximum number of messages to return in the batch

Subscription type
subscriptionType string

Subscription type - Main or DeadLetter

Session id
sessionId string

Session id

Returns

Renew lock on the message in a queue

The operation renews lock on a message in a queue.

Parameters

Name Key Required Type Description
Queue name
queueName True string

Name of the queue

Lock token of the message
lockToken True string

Lock token of the message to renew lock

Queue type
queueType string

Queue type - Main or DeadLetter

Renew lock on the message in a topic subscription

The operation renews lock on a message in a topic subscription.

Parameters

Name Key Required Type Description
Topic name
topicName True string

Name of the topic

Topic subscription name
subscriptionName True string

Name of the topic subscription

Lock token of the message
lockToken True string

Lock token of the message to renew lock

Subscription type
subscriptionType string

Subscription type - Main or DeadLetter

Renew lock on the session in a queue

The operation renews a session in a queue.

Parameters

Name Key Required Type Description
Queue name
queueName True string

Name of the queue

Session id
sessionId True string

Session id

Renew lock on the session in a topic subscription

The operation renews a session in a topic subscription.

Parameters

Name Key Required Type Description
Topic name
topicName True string

Name of the topic

Topic subscription name
subscriptionName True string

Name of the topic subscription

Session id
sessionId True string

Session id

Send message

This operation sends a message to a queue or topic.

Parameters

Name Key Required Type Description
Queue/Topic name
entityName True string

Name of the queue or topic

Content
ContentData byte

Content of the message

Content Type
ContentType string

Content type of the message content

Properties
Properties object

Key-value pairs for each brokered property

Message Id
MessageId string

This is a user-defined value that Service Bus can use to identify duplicate messages, if enabled.

To
To string

Send to address

Reply To
ReplyTo string

Address of the queue to reply to

Reply To Session Id
ReplyToSessionId string

Identifier of the session to reply to

Label
Label string

Application specific label

ScheduledEnqueueTimeUtc
ScheduledEnqueueTimeUtc date-time

Date and time, in UTC, when the message will be added to the queue

Session Id
SessionId string

Identifier of the session

Correlation Id
CorrelationId string

Identifier of the correlation

Sequence Number
SequenceNumber integer

Identifier of the sequence number

Lock Token
LockToken string

The lock token of the message as a string.

Time To Live
TimeToLive integer

This is the duration, in ticks, that a message is valid. The duration starts from when the message is sent to the Service Bus.

System properties
systemProperties string

System properties - None or Run Details. Run Details will add run metadata property details as custom properties in the message.

Send one or more messages

This operation sends one or more messages to a queue or topic.

Parameters

Name Key Required Type Description
Queue/Topic name
entityName True string

Name of the queue or topic

Content
ContentData byte

Content of the message

Content Type
ContentType string

Content type of the message content

Properties
Properties object

Key-value pairs for each brokered property

Message Id
MessageId string

This is a user-defined value that Service Bus can use to identify duplicate messages, if enabled.

To
To string

Send to address

Reply To
ReplyTo string

Address of the queue to reply to

Reply To Session Id
ReplyToSessionId string

Identifier of the session to reply to

Label
Label string

Application specific label

ScheduledEnqueueTimeUtc
ScheduledEnqueueTimeUtc date-time

Date and time, in UTC, when the message will be added to the queue

Session Id
SessionId string

Identifier of the session

Correlation Id
CorrelationId string

Identifier of the correlation

Sequence Number
SequenceNumber integer

Identifier of the sequence number

Lock Token
LockToken string

The lock token of the message as a string.

Time To Live
TimeToLive integer

This is the duration, in ticks, that a message is valid. The duration starts from when the message is sent to the Service Bus.

System properties
systemProperties string

System properties - None or Run Details. Run Details will add run metadata property details as custom properties in the message.

Triggers

When a message is received in a queue (auto-complete)

This operation triggers a flow when a message is received in a queue and auto completes the message.

When a message is received in a queue (peek-lock)

The operation triggers a flow when a message received in a queue with peek-lock mode.

When a message is received in a topic subscription (auto-complete)

This operation triggers a flow when a message is received in a topic subscription and auto completes the message.

When a message is received in a topic subscription (peek-lock)

The operation triggers a flow when a message received in a topic subscription with peek-lock mode.

When one or more messages arrive in a queue (auto-complete)

The operation receives one or more messages from a queue. If maximum message count is not provided, it reads 20 messages.

When one or more messages arrive in a queue (peek-lock)

The operation receives one or more messages from a queue with peek-lock. If maximum message count is not provided, it reads 20 messages.

When one or more messages arrive in a topic (auto-complete)

The operation receives one or more messages from a topic. If maximum message count is not provided, it reads 20 messages.

When one or more messages arrive in a topic (peek-lock)

The operation receives one or more messages from a topic with peek-lock. If maximum message count is not provided, it reads 20 messages.

When a message is received in a queue (auto-complete)

This operation triggers a flow when a message is received in a queue and auto completes the message.

Parameters

Name Key Required Type Description
Queue name
queueName True string

Name of the queue

Queue type
queueType string

Queue type - Main or DeadLetter

Returns

Service Bus Message

When a message is received in a queue (peek-lock)

The operation triggers a flow when a message received in a queue with peek-lock mode.

Parameters

Name Key Required Type Description
Queue name
queueName True string

Name of the queue

Queue type
queueType string

Queue type - Main or DeadLetter

Session id
sessionId string

Session id - None or Next Available or provide session id

Returns

Service Bus Message

When a message is received in a topic subscription (auto-complete)

This operation triggers a flow when a message is received in a topic subscription and auto completes the message.

Parameters

Name Key Required Type Description
Topic name
topicName True string

Name of the topic

Topic subscription name
subscriptionName True string

Name of the topic subscription

Subscription type
subscriptionType string

Subscription type - Main or DeadLetter

Returns

Service Bus Message

When a message is received in a topic subscription (peek-lock)

The operation triggers a flow when a message received in a topic subscription with peek-lock mode.

Parameters

Name Key Required Type Description
Topic name
topicName True string

Name of the topic

Topic subscription name
subscriptionName True string

Name of the topic subscription

Subscription type
subscriptionType string

Subscription type - Main or DeadLetter

Session id
sessionId string

Session id - None or Next Available or provide session id

Returns

Service Bus Message

When one or more messages arrive in a queue (auto-complete)

The operation receives one or more messages from a queue. If maximum message count is not provided, it reads 20 messages.

Parameters

Name Key Required Type Description
Queue name
queueName True string

Name of the queue

Maximum message count
maxMessageCount integer

The maximum number of messages to return in the batch

Queue type
queueType string

Queue type - Main or DeadLetter

Returns

Service Bus Message

When one or more messages arrive in a queue (peek-lock)

The operation receives one or more messages from a queue with peek-lock. If maximum message count is not provided, it reads 20 messages.

Parameters

Name Key Required Type Description
Queue name
queueName True string

Name of the queue

Maximum message count
maxMessageCount integer

The maximum number of messages to return in the batch

Queue type
queueType string

Queue type - Main or DeadLetter

Session id
sessionId string

Session id - None or Next Available or provide session id

Returns

Service Bus Message

When one or more messages arrive in a topic (auto-complete)

The operation receives one or more messages from a topic. If maximum message count is not provided, it reads 20 messages.

Parameters

Name Key Required Type Description
Topic name
topicName True string

Name of the topic

Topic subscription name
subscriptionName True string

Name of the topic subscription

Maximum message count
maxMessageCount integer

The maximum number of messages to return in the batch

Subscription type
subscriptionType string

Subscription type - Main or DeadLetter

Returns

Service Bus Message

When one or more messages arrive in a topic (peek-lock)

The operation receives one or more messages from a topic with peek-lock. If maximum message count is not provided, it reads 20 messages.

Parameters

Name Key Required Type Description
Topic name
topicName True string

Name of the topic

Topic subscription name
subscriptionName True string

Name of the topic subscription

Maximum message count
maxMessageCount integer

The maximum number of messages to return in the batch

Subscription type
subscriptionType string

Subscription type - Main or DeadLetter

Session id
sessionId string

Session id - None or Next Available or provide session id

Returns

Service Bus Message

Definitions

ServiceBusMessage

Service Bus Message

Name Path Type Description
Content
ContentData byte

Content of the message

Content Type
ContentType string

Content type of the message content

Properties
Properties object

Key-value pairs for each brokered property

Message Id
MessageId string

This is a user-defined value that Service Bus can use to identify duplicate messages, if enabled.

To
To string

Send to address

Reply To
ReplyTo string

Address of the queue to reply to

Reply To Session Id
ReplyToSessionId string

Identifier of the session to reply to

Label
Label string

Application specific label

ScheduledEnqueueTimeUtc
ScheduledEnqueueTimeUtc date-time

Date and time, in UTC, when the message will be added to the queue

Session Id
SessionId string

Identifier of the session

Correlation Id
CorrelationId string

Identifier of the correlation

Sequence Number
SequenceNumber integer

Identifier of the sequence number

Lock Token
LockToken string

The lock token of the message as a string.

Time To Live
TimeToLive integer

This is the duration, in ticks, that a message is valid. The duration starts from when the message is sent to the Service Bus.

Subscription

The topic subscription.

Name Path Type Description
Subscription name
SubscriptionName string

Subscription name.