# ManagedExecution
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Describes whether StackSets performs non-conflicting operations concurrently and queues conflicting operations.

## Contents
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 ** Active **   
When `true`, CloudFormation performs non-conflicting operations concurrently and queues conflicting operations. After conflicting operations finish, CloudFormation starts queued operations in request order.  
If there are already running or queued operations, CloudFormation queues all incoming operations even if they are non-conflicting.  
You can't modify your StackSet's execution configuration while there are running or queued operations for that StackSet.
When `false` (default), StackSets performs one operation at a time in request order.  
Type: Boolean  
Required: No

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/cloudformation-2010-05-15/ManagedExecution) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/cloudformation-2010-05-15/ManagedExecution) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/cloudformation-2010-05-15/ManagedExecution)