# ResourceChange
<a name="API_ResourceChange"></a>

The `ResourceChange` structure describes the resource and the action that CloudFormation will perform on it if you execute this change set.

## Contents
<a name="API_ResourceChange_Contents"></a>

 ** Action **   
The action that CloudFormation takes on the resource, such as `Add` (adds a new resource), `Modify` (changes a resource), `Remove` (deletes a resource), `Import` (imports a resource), `Dynamic` (exact action for the resource can't be determined), or `SyncWithActual` (resource will not be changed, only CloudFormation metadata will change).  
Type: String  
Valid Values: `Add | Modify | Remove | Import | Dynamic | SyncWithActual`   
Required: No

 ** AfterContext **   
An encoded JSON string that contains the context of the resource after the change is executed.  
Type: String  
Required: No

 ** BeforeContext **   
An encoded JSON string that contains the context of the resource before the change is executed.  
Type: String  
Required: No

 ** ChangeSetId **   
The change set ID of the nested change set.  
Type: String  
Length Constraints: Minimum length of 1.  
Pattern: `arn:[-a-zA-Z0-9:/]*`   
Required: No

 ** Details.member.N **   
For the `Modify` action, a list of `ResourceChangeDetail` structures that describes the changes that CloudFormation will make to the resource.  
Type: Array of [ResourceChangeDetail](API_ResourceChangeDetail.md) objects  
Required: No

 ** LogicalResourceId **   
The resource's logical ID, which is defined in the stack's template.  
Type: String  
Required: No

 ** ModuleInfo **   
Contains information about the module from which the resource was created, if the resource was created from a module included in the stack template.  
Type: [ModuleInfo](API_ModuleInfo.md) object  
Required: No

 ** PhysicalResourceId **   
The resource's physical ID (resource name). Resources that you are adding don't have physical IDs because they haven't been created.  
Type: String  
Required: No

 ** PolicyAction **   
The action that will be taken on the physical resource when the change set is executed.  
+  `Delete` The resource will be deleted.
+  `Retain` The resource will be retained.
+  `Snapshot` The resource will have a snapshot taken.
+  `ReplaceAndDelete` The resource will be replaced and then deleted.
+  `ReplaceAndRetain` The resource will be replaced and then retained.
+  `ReplaceAndSnapshot` The resource will be replaced and then have a snapshot taken.
Type: String  
Valid Values: `Delete | Retain | Snapshot | ReplaceAndDelete | ReplaceAndRetain | ReplaceAndSnapshot`   
Required: No

 ** PreviousDeploymentContext **   
Information about the resource's state from the previous CloudFormation deployment.  
Type: String  
Required: No

 ** Replacement **   
For the `Modify` action, indicates whether CloudFormation will replace the resource by creating a new one and deleting the old one. This value depends on the value of the `RequiresRecreation` property in the `ResourceTargetDefinition` structure. For example, if the `RequiresRecreation` field is `Always` and the `Evaluation` field is `Static`, `Replacement` is `True`. If the `RequiresRecreation` field is `Always` and the `Evaluation` field is `Dynamic`, `Replacement` is `Conditional`.  
If you have multiple changes with different `RequiresRecreation` values, the `Replacement` value depends on the change with the most impact. A `RequiresRecreation` value of `Always` has the most impact, followed by `Conditional`, and then `Never`.  
Type: String  
Valid Values: `True | False | Conditional`   
Required: No

 ** ResourceDriftIgnoredAttributes.member.N **   
List of resource attributes for which drift was ignored.  
Type: Array of [ResourceDriftIgnoredAttribute](API_ResourceDriftIgnoredAttribute.md) objects  
Required: No

 ** ResourceDriftStatus **   
The drift status of the resource. Valid values:  
+  `IN_SYNC` – The resource matches its template definition.
+  `MODIFIED` – Resource properties were modified outside CloudFormation.
+  `DELETED` – The resource was deleted outside CloudFormation.
+  `NOT_CHECKED` – CloudFormation doesn’t currently return this value.
+  `UNKNOWN` – Drift status could not be determined.
+  `UNSUPPORTED` – Resource type does not support actual state comparison.
Only present for drift-aware change sets.  
Type: String  
Valid Values: `IN_SYNC | MODIFIED | DELETED | NOT_CHECKED | UNKNOWN | UNSUPPORTED`   
Required: No

 ** ResourceType **   
The type of CloudFormation resource, such as `AWS::S3::Bucket`.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 256.  
Required: No

 ** Scope.member.N **   
For the `Modify` action, indicates which resource attribute is triggering this update, such as a change in the resource attribute's `Metadata`, `Properties`, or `Tags`.  
Type: Array of strings  
Valid Values: `Properties | Metadata | CreationPolicy | UpdatePolicy | DeletionPolicy | UpdateReplacePolicy | Tags`   
Required: No

## See Also
<a name="API_ResourceChange_SeeAlso"></a>

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/ResourceChange) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/cloudformation-2010-05-15/ResourceChange) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/cloudformation-2010-05-15/ResourceChange)