AWS SDK Version 3 for .NET
API Reference

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Associates the specified Systems Manager document with the specified instances or targets.

When you associate a document with one or more instances using instance IDs or tags, the SSM Agent running on the instance processes the document and configures the instance as specified.

If you associate a document with an instance that already has an associated document, the system throws the AssociationAlreadyExists exception.


For .NET Core and PCL this operation is only available in asynchronous form. Please refer to CreateAssociationAsync.

Namespace: Amazon.SimpleSystemsManagement
Assembly: AWSSDK.SimpleSystemsManagement.dll
Version: 3.x.y.z


public abstract CreateAssociationResponse CreateAssociation(
         String instanceId,
         String name
Type: System.String

The instance ID.

Type: System.String

The name of the Systems Manager document.

Return Value
The response from the CreateAssociation service method, as returned by SimpleSystemsManagement.


AssociationAlreadyExistsException The specified association already exists.
AssociationLimitExceededException You can have at most 2,000 active associations.
InternalServerErrorException An error occurred on the server side.
InvalidDocumentException The specified document does not exist.
InvalidDocumentVersionException The document version is not valid or does not exist.
InvalidInstanceIdException The following problems can cause this exception: You do not have permission to access the instance. SSM Agent is not running. On managed instances and Linux instances, verify that the SSM Agent is running. On EC2 Windows instances, verify that the EC2Config service is running. SSM Agent or EC2Config service is not registered to the SSM endpoint. Try reinstalling SSM Agent or EC2Config service. The instance is not in valid state. Valid states are: Running, Pending, Stopped, Stopping. Invalid states are: Shutting-down and Terminated.
InvalidOutputLocationException The output location is not valid or does not exist.
InvalidParametersException You must specify values for all required parameters in the Systems Manager document. You can only supply values to parameters defined in the Systems Manager document.
InvalidScheduleException The schedule is invalid. Verify your cron or rate expression and try again.
InvalidTargetException The target is not valid or does not exist. It might not be configured for EC2 Systems Manager or you might not have permission to perform the operation.
UnsupportedPlatformTypeException The document does not support the platform type of the given instance ID(s). For example, you sent an document for a Windows instance to a Linux instance.

Version Information

.NET Framework:
Supported in: 4.5, 4.0, 3.5

Portable Class Library:
Supported in: Windows Store Apps
Supported in: Windows Phone 8.1
Supported in: Xamarin Android
Supported in: Xamarin iOS (Unified)
Supported in: Xamarin.Forms

See Also