This is the new *CloudFormation Template Reference Guide*. Please update your bookmarks and links. For help getting started with CloudFormation, see the [AWS CloudFormation User Guide](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/Welcome.html).

# AWS::EntityResolution::MatchingWorkflow RuleBasedProperties
<a name="aws-properties-entityresolution-matchingworkflow-rulebasedproperties"></a>

An object which defines the list of matching rules to run in a matching workflow. 

## Syntax
<a name="aws-properties-entityresolution-matchingworkflow-rulebasedproperties-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-entityresolution-matchingworkflow-rulebasedproperties-syntax.json"></a>

```
{
  "[AttributeMatchingModel](#cfn-entityresolution-matchingworkflow-rulebasedproperties-attributematchingmodel)" : String,
  "[MatchPurpose](#cfn-entityresolution-matchingworkflow-rulebasedproperties-matchpurpose)" : String,
  "[Rules](#cfn-entityresolution-matchingworkflow-rulebasedproperties-rules)" : [ Rule, ... ]
}
```

### YAML
<a name="aws-properties-entityresolution-matchingworkflow-rulebasedproperties-syntax.yaml"></a>

```
  [AttributeMatchingModel](#cfn-entityresolution-matchingworkflow-rulebasedproperties-attributematchingmodel): String
  [MatchPurpose](#cfn-entityresolution-matchingworkflow-rulebasedproperties-matchpurpose): String
  [Rules](#cfn-entityresolution-matchingworkflow-rulebasedproperties-rules): 
    - Rule
```

## Properties
<a name="aws-properties-entityresolution-matchingworkflow-rulebasedproperties-properties"></a>

`AttributeMatchingModel`  <a name="cfn-entityresolution-matchingworkflow-rulebasedproperties-attributematchingmodel"></a>
The comparison type. You can choose `ONE_TO_ONE` or `MANY_TO_MANY` as the `attributeMatchingModel`.   
If you choose `ONE_TO_ONE`, the system can only match attributes if the sub-types are an exact match. For example, for the `Email` attribute type, the system will only consider it a match if the value of the `Email` field of Profile A matches the value of the `Email` field of Profile B.  
If you choose `MANY_TO_MANY`, the system can match attributes across the sub-types of an attribute type. For example, if the value of the `Email` field of Profile A and the value of `BusinessEmail` field of Profile B matches, the two profiles are matched on the `Email` attribute type.   
*Required*: Yes  
*Type*: String  
*Allowed values*: `ONE_TO_ONE | MANY_TO_MANY`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`MatchPurpose`  <a name="cfn-entityresolution-matchingworkflow-rulebasedproperties-matchpurpose"></a>
 An indicator of whether to generate IDs and index the data or not.  
If you choose `IDENTIFIER_GENERATION`, the process generates IDs and indexes the data.  
If you choose `INDEXING`, the process indexes the data without generating IDs.  
*Required*: No  
*Type*: String  
*Allowed values*: `IDENTIFIER_GENERATION | INDEXING`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Rules`  <a name="cfn-entityresolution-matchingworkflow-rulebasedproperties-rules"></a>
A list of `Rule` objects, each of which have fields `RuleName` and `MatchingKeys`.  
*Required*: Yes  
*Type*: Array of [Rule](aws-properties-entityresolution-matchingworkflow-rule.md)  
*Minimum*: `1`  
*Maximum*: `25`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)