# ActionDefinition


Contains a definition for an action.

## Contents


 ** actionDefinitionId **   <a name="iotsitewise-Type-ActionDefinition-actionDefinitionId"></a>
The ID of the action definition.  
Type: String  
Length Constraints: Fixed length of 36.  
Pattern: `^(?!00000000-0000-0000-0000-000000000000)[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$`   
Required: Yes

 ** actionName **   <a name="iotsitewise-Type-ActionDefinition-actionName"></a>
The name of the action definition.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 256.  
Pattern: `[^\u0000-\u001F\u007F]+`   
Required: Yes

 ** actionType **   <a name="iotsitewise-Type-ActionDefinition-actionType"></a>
The type of the action definition.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 256.  
Pattern: `[^\u0000-\u001F\u007F]+`   
Required: Yes

## See Also


For more information about using this API in one of the language-specific Amazon SDKs, see the following:
+  [Amazon SDK for C\$1\$1](https://docs.amazonaws.cn/goto/SdkForCpp/iotsitewise-2019-12-02/ActionDefinition) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/iotsitewise-2019-12-02/ActionDefinition) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/iotsitewise-2019-12-02/ActionDefinition)